640716840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{523}}^1$

素因数の和:664

約数の個数: 192

約数和(自身を含む): 2162946240

約数和(自身を除く): 1522229400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 41, 45, 60, 72, 82, 83, 90, 120, 123, 164, 166, 180, 205, 246, 249, 328, 332, 360, 369, 410, 415, 492, 498, 523, 615, 664, 738, 747, 820, 830, 984, 996, 1046, 1230, 1245, 1476, 1494, 1569, 1640, 1660, 1845, 1992, 2092, 2460, 2490, 2615, 2952, 2988, 3138, 3320, 3403, 3690, 3735, 4184, 4707, 4920, 4980, 5230, 5976, 6276, 6806, 7380, 7470, 7845, 9414, 9960, 10209, 10460, 12552, 13612, 14760, 14940, 15690, 17015, 18828, 20418, 20920, 21443, 23535, 27224, 29880, 30627, 31380, 34030, 37656, 40836, 42886, 43409, 47070, 51045, 61254, 62760, 64329, 68060, 81672, 85772, 86818, 94140, 102090, 107215, 122508, 128658, 130227, 136120, 153135, 171544, 173636, 188280, 192987, 204180, 214430, 217045, 245016, 257316, 260454, 306270, 321645, 347272, 385974, 390681, 408360, 428860, 434090, 514632, 520908, 612540, 643290, 651135, 771948, 781362, 857720, 868180, 964935, 1041816, 1225080, 1286580, 1302270, 1543896, 1562724, 1736360, 1779769, 1929870, 1953405, 2573160, 2604540, 3125448, 3559538, 3859740, 3906810, 5209080, 5339307, 7119076, 7719480, 7813620, 8898845, 10678614, 14238152, 15627240, 16017921, 17797690, 21357228, 26696535, 32035842, 35595380, 42714456, 53393070, 64071684, 71190760, 80089605, 106786140, 128143368, 160179210, 213572280, 320358420, 640716840]

約数ペア:

[(1, 640716840), (2, 320358420), (3, 213572280), (4, 160179210), (5, 128143368), (6, 106786140), (8, 80089605), (9, 71190760), (10, 64071684), (12, 53393070), (15, 42714456), (18, 35595380), (20, 32035842), (24, 26696535), (30, 21357228), (36, 17797690), (40, 16017921), (41, 15627240), (45, 14238152), (60, 10678614), (72, 8898845), (82, 7813620), (83, 7719480), (90, 7119076), (120, 5339307), (123, 5209080), (164, 3906810), (166, 3859740), (180, 3559538), (205, 3125448), (246, 2604540), (249, 2573160), (328, 1953405), (332, 1929870), (360, 1779769), (369, 1736360), (410, 1562724), (415, 1543896), (492, 1302270), (498, 1286580), (523, 1225080), (615, 1041816), (664, 964935), (738, 868180), (747, 857720), (820, 781362), (830, 771948), (984, 651135), (996, 643290), (1046, 612540), (1230, 520908), (1245, 514632), (1476, 434090), (1494, 428860), (1569, 408360), (1640, 390681), (1660, 385974), (1845, 347272), (1992, 321645), (2092, 306270), (2460, 260454), (2490, 257316), (2615, 245016), (2952, 217045), (2988, 214430), (3138, 204180), (3320, 192987), (3403, 188280), (3690, 173636), (3735, 171544), (4184, 153135), (4707, 136120), (4920, 130227), (4980, 128658), (5230, 122508), (5976, 107215), (6276, 102090), (6806, 94140), (7380, 86818), (7470, 85772), (7845, 81672), (9414, 68060), (9960, 64329), (10209, 62760), (10460, 61254), (12552, 51045), (13612, 47070), (14760, 43409), (14940, 42886), (15690, 40836), (17015, 37656), (18828, 34030), (20418, 31380), (20920, 30627), (21443, 29880), (23535, 27224)]