19993680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3967}}^1$

素因数の和:3993

約数の個数: 120

約数和(自身を含む): 76756992

約数和(自身を除く): 56763312

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3967, 5040, 7934, 11901, 15868, 19835, 23802, 27769, 31736, 35703, 39670, 47604, 55538, 59505, 63472, 71406, 79340, 83307, 95208, 111076, 119010, 138845, 142812, 158680, 166614, 178515, 190416, 222152, 238020, 249921, 277690, 285624, 317360, 333228, 357030, 416535, 444304, 476040, 499842, 555380, 571248, 666456, 714060, 833070, 952080, 999684, 1110760, 1249605, 1332912, 1428120, 1666140, 1999368, 2221520, 2499210, 2856240, 3332280, 3998736, 4998420, 6664560, 9996840, 19993680]

約数ペア:

[(1, 19993680), (2, 9996840), (3, 6664560), (4, 4998420), (5, 3998736), (6, 3332280), (7, 2856240), (8, 2499210), (9, 2221520), (10, 1999368), (12, 1666140), (14, 1428120), (15, 1332912), (16, 1249605), (18, 1110760), (20, 999684), (21, 952080), (24, 833070), (28, 714060), (30, 666456), (35, 571248), (36, 555380), (40, 499842), (42, 476040), (45, 444304), (48, 416535), (56, 357030), (60, 333228), (63, 317360), (70, 285624), (72, 277690), (80, 249921), (84, 238020), (90, 222152), (105, 190416), (112, 178515), (120, 166614), (126, 158680), (140, 142812), (144, 138845), (168, 119010), (180, 111076), (210, 95208), (240, 83307), (252, 79340), (280, 71406), (315, 63472), (336, 59505), (360, 55538), (420, 47604), (504, 39670), (560, 35703), (630, 31736), (720, 27769), (840, 23802), (1008, 19835), (1260, 15868), (1680, 11901), (2520, 7934), (3967, 5040)]