31019780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 77051520

約数和(自身を除く): 46031740

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 41, 44, 55, 76, 82, 95, 110, 164, 181, 190, 205, 209, 220, 362, 380, 410, 418, 451, 724, 779, 820, 836, 902, 905, 1045, 1558, 1804, 1810, 1991, 2090, 2255, 3116, 3439, 3620, 3895, 3982, 4180, 4510, 6878, 7421, 7790, 7964, 8569, 9020, 9955, 13756, 14842, 15580, 17138, 17195, 19910, 29684, 34276, 34390, 37105, 37829, 39820, 42845, 68780, 74210, 75658, 81631, 85690, 140999, 148420, 151316, 163262, 171380, 189145, 281998, 326524, 378290, 408155, 563996, 704995, 756580, 816310, 1409990, 1550989, 1632620, 2819980, 3101978, 6203956, 7754945, 15509890, 31019780]

約数ペア:

[(1, 31019780), (2, 15509890), (4, 7754945), (5, 6203956), (10, 3101978), (11, 2819980), (19, 1632620), (20, 1550989), (22, 1409990), (38, 816310), (41, 756580), (44, 704995), (55, 563996), (76, 408155), (82, 378290), (95, 326524), (110, 281998), (164, 189145), (181, 171380), (190, 163262), (205, 151316), (209, 148420), (220, 140999), (362, 85690), (380, 81631), (410, 75658), (418, 74210), (451, 68780), (724, 42845), (779, 39820), (820, 37829), (836, 37105), (902, 34390), (905, 34276), (1045, 29684), (1558, 19910), (1804, 17195), (1810, 17138), (1991, 15580), (2090, 14842), (2255, 13756), (3116, 9955), (3439, 9020), (3620, 8569), (3895, 7964), (3982, 7790), (4180, 7421), (4510, 6878)]