66666820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 165110400

約数和(自身を除く): 98443580

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 41, 44, 55, 76, 82, 95, 110, 164, 190, 205, 209, 220, 380, 389, 410, 418, 451, 778, 779, 820, 836, 902, 1045, 1556, 1558, 1804, 1945, 2090, 2255, 3116, 3890, 3895, 4180, 4279, 4510, 7391, 7780, 7790, 8558, 8569, 9020, 14782, 15580, 15949, 17116, 17138, 21395, 29564, 31898, 34276, 36955, 42790, 42845, 63796, 73910, 79745, 81301, 85580, 85690, 147820, 159490, 162602, 171380, 175439, 303031, 318980, 325204, 350878, 406505, 606062, 701756, 813010, 877195, 1212124, 1515155, 1626020, 1754390, 3030310, 3333341, 3508780, 6060620, 6666682, 13333364, 16666705, 33333410, 66666820]

約数ペア:

[(1, 66666820), (2, 33333410), (4, 16666705), (5, 13333364), (10, 6666682), (11, 6060620), (19, 3508780), (20, 3333341), (22, 3030310), (38, 1754390), (41, 1626020), (44, 1515155), (55, 1212124), (76, 877195), (82, 813010), (95, 701756), (110, 606062), (164, 406505), (190, 350878), (205, 325204), (209, 318980), (220, 303031), (380, 175439), (389, 171380), (410, 162602), (418, 159490), (451, 147820), (778, 85690), (779, 85580), (820, 81301), (836, 79745), (902, 73910), (1045, 63796), (1556, 42845), (1558, 42790), (1804, 36955), (1945, 34276), (2090, 31898), (2255, 29564), (3116, 21395), (3890, 17138), (3895, 17116), (4180, 15949), (4279, 15580), (4510, 14782), (7391, 9020), (7780, 8569), (7790, 8558)]