81381440

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{773}}^1$

素因数の和:844

約数の個数: 112

約数和(自身を含む): 226478592

約数和(自身を除く): 145097152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 70, 80, 94, 112, 140, 160, 188, 224, 235, 280, 320, 329, 376, 448, 470, 560, 658, 752, 773, 940, 1120, 1316, 1504, 1546, 1645, 1880, 2240, 2632, 3008, 3092, 3290, 3760, 3865, 5264, 5411, 6184, 6580, 7520, 7730, 10528, 10822, 12368, 13160, 15040, 15460, 21056, 21644, 24736, 26320, 27055, 30920, 36331, 43288, 49472, 52640, 54110, 61840, 72662, 86576, 105280, 108220, 123680, 145324, 173152, 181655, 216440, 247360, 254317, 290648, 346304, 363310, 432880, 508634, 581296, 726620, 865760, 1017268, 1162592, 1271585, 1453240, 1731520, 2034536, 2325184, 2543170, 2906480, 4069072, 5086340, 5812960, 8138144, 10172680, 11625920, 16276288, 20345360, 40690720, 81381440]

約数ペア:

[(1, 81381440), (2, 40690720), (4, 20345360), (5, 16276288), (7, 11625920), (8, 10172680), (10, 8138144), (14, 5812960), (16, 5086340), (20, 4069072), (28, 2906480), (32, 2543170), (35, 2325184), (40, 2034536), (47, 1731520), (56, 1453240), (64, 1271585), (70, 1162592), (80, 1017268), (94, 865760), (112, 726620), (140, 581296), (160, 508634), (188, 432880), (224, 363310), (235, 346304), (280, 290648), (320, 254317), (329, 247360), (376, 216440), (448, 181655), (470, 173152), (560, 145324), (658, 123680), (752, 108220), (773, 105280), (940, 86576), (1120, 72662), (1316, 61840), (1504, 54110), (1546, 52640), (1645, 49472), (1880, 43288), (2240, 36331), (2632, 30920), (3008, 27055), (3092, 26320), (3290, 24736), (3760, 21644), (3865, 21056), (5264, 15460), (5411, 15040), (6184, 13160), (6580, 12368), (7520, 10822), (7730, 10528)]