388618780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{389}}^1$

素因数の和:667

約数の個数: 96

約数和(自身を含む): 943488000

約数和(自身を除く): 554869220

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 239, 380, 389, 418, 478, 778, 836, 956, 1045, 1195, 1556, 1945, 2090, 2390, 2629, 3890, 4180, 4279, 4541, 4780, 5258, 7391, 7780, 8558, 9082, 10516, 13145, 14782, 17116, 18164, 21395, 22705, 26290, 29564, 36955, 42790, 45410, 49951, 52580, 73910, 81301, 85580, 90820, 92971, 99902, 147820, 162602, 185942, 199804, 249755, 325204, 371884, 406505, 464855, 499510, 813010, 929710, 999020, 1022681, 1626020, 1766449, 1859420, 2045362, 3532898, 4090724, 5113405, 7065796, 8832245, 10226810, 17664490, 19430939, 20453620, 35328980, 38861878, 77723756, 97154695, 194309390, 388618780]

約数ペア:

[(1, 388618780), (2, 194309390), (4, 97154695), (5, 77723756), (10, 38861878), (11, 35328980), (19, 20453620), (20, 19430939), (22, 17664490), (38, 10226810), (44, 8832245), (55, 7065796), (76, 5113405), (95, 4090724), (110, 3532898), (190, 2045362), (209, 1859420), (220, 1766449), (239, 1626020), (380, 1022681), (389, 999020), (418, 929710), (478, 813010), (778, 499510), (836, 464855), (956, 406505), (1045, 371884), (1195, 325204), (1556, 249755), (1945, 199804), (2090, 185942), (2390, 162602), (2629, 147820), (3890, 99902), (4180, 92971), (4279, 90820), (4541, 85580), (4780, 81301), (5258, 73910), (7391, 52580), (7780, 49951), (8558, 45410), (9082, 42790), (10516, 36955), (13145, 29564), (14782, 26290), (17116, 22705), (18164, 21395)]