19973520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1321}}^1$

素因数の和:1350

約数の個数: 160

約数和(自身を含む): 78685440

約数和(自身を除く): 58711920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1321, 1512, 1680, 1890, 2160, 2520, 2642, 3024, 3780, 3963, 5040, 5284, 6605, 7560, 7926, 9247, 10568, 11889, 13210, 15120, 15852, 18494, 19815, 21136, 23778, 26420, 27741, 31704, 35667, 36988, 39630, 46235, 47556, 52840, 55482, 59445, 63408, 71334, 73976, 79260, 83223, 92470, 95112, 105680, 110964, 118890, 138705, 142668, 147952, 158520, 166446, 178335, 184940, 190224, 221928, 237780, 249669, 277410, 285336, 317040, 332892, 356670, 369880, 416115, 443856, 475560, 499338, 554820, 570672, 665784, 713340, 739760, 832230, 951120, 998676, 1109640, 1248345, 1331568, 1426680, 1664460, 1997352, 2219280, 2496690, 2853360, 3328920, 3994704, 4993380, 6657840, 9986760, 19973520]

約数ペア:

[(1, 19973520), (2, 9986760), (3, 6657840), (4, 4993380), (5, 3994704), (6, 3328920), (7, 2853360), (8, 2496690), (9, 2219280), (10, 1997352), (12, 1664460), (14, 1426680), (15, 1331568), (16, 1248345), (18, 1109640), (20, 998676), (21, 951120), (24, 832230), (27, 739760), (28, 713340), (30, 665784), (35, 570672), (36, 554820), (40, 499338), (42, 475560), (45, 443856), (48, 416115), (54, 369880), (56, 356670), (60, 332892), (63, 317040), (70, 285336), (72, 277410), (80, 249669), (84, 237780), (90, 221928), (105, 190224), (108, 184940), (112, 178335), (120, 166446), (126, 158520), (135, 147952), (140, 142668), (144, 138705), (168, 118890), (180, 110964), (189, 105680), (210, 95112), (216, 92470), (240, 83223), (252, 79260), (270, 73976), (280, 71334), (315, 63408), (336, 59445), (360, 55482), (378, 52840), (420, 47556), (432, 46235), (504, 39630), (540, 36988), (560, 35667), (630, 31704), (720, 27741), (756, 26420), (840, 23778), (945, 21136), (1008, 19815), (1080, 18494), (1260, 15852), (1321, 15120), (1512, 13210), (1680, 11889), (1890, 10568), (2160, 9247), (2520, 7926), (2642, 7560), (3024, 6605), (3780, 5284), (3963, 5040)]