281302840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{709}}^1$

素因数の和:849

約数の個数: 128

約数和(自身を含む): 787248000

約数和(自身を除く): 505945160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 109, 130, 140, 182, 218, 260, 280, 364, 436, 455, 520, 545, 709, 728, 763, 872, 910, 1090, 1417, 1418, 1526, 1820, 2180, 2834, 2836, 3052, 3545, 3640, 3815, 4360, 4963, 5668, 5672, 6104, 7085, 7090, 7630, 9217, 9919, 9926, 11336, 14170, 14180, 15260, 18434, 19838, 19852, 24815, 28340, 28360, 30520, 36868, 39676, 39704, 46085, 49595, 49630, 56680, 64519, 73736, 77281, 79352, 92170, 99190, 99260, 129038, 154562, 184340, 198380, 198520, 258076, 309124, 322595, 368680, 386405, 396760, 516152, 540967, 618248, 645190, 772810, 1004653, 1081934, 1290380, 1545620, 2009306, 2163868, 2580760, 2704835, 3091240, 4018612, 4327736, 5023265, 5409670, 7032571, 8037224, 10046530, 10819340, 14065142, 20093060, 21638680, 28130284, 35162855, 40186120, 56260568, 70325710, 140651420, 281302840]

約数ペア:

[(1, 281302840), (2, 140651420), (4, 70325710), (5, 56260568), (7, 40186120), (8, 35162855), (10, 28130284), (13, 21638680), (14, 20093060), (20, 14065142), (26, 10819340), (28, 10046530), (35, 8037224), (40, 7032571), (52, 5409670), (56, 5023265), (65, 4327736), (70, 4018612), (91, 3091240), (104, 2704835), (109, 2580760), (130, 2163868), (140, 2009306), (182, 1545620), (218, 1290380), (260, 1081934), (280, 1004653), (364, 772810), (436, 645190), (455, 618248), (520, 540967), (545, 516152), (709, 396760), (728, 386405), (763, 368680), (872, 322595), (910, 309124), (1090, 258076), (1417, 198520), (1418, 198380), (1526, 184340), (1820, 154562), (2180, 129038), (2834, 99260), (2836, 99190), (3052, 92170), (3545, 79352), (3640, 77281), (3815, 73736), (4360, 64519), (4963, 56680), (5668, 49630), (5672, 49595), (6104, 46085), (7085, 39704), (7090, 39676), (7630, 36868), (9217, 30520), (9919, 28360), (9926, 28340), (11336, 24815), (14170, 19852), (14180, 19838), (15260, 18434)]