20002730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 41430528

約数和(自身を除く): 21427798

約数列:

[1, 2, 5, 10, 11, 22, 47, 53, 55, 73, 94, 106, 110, 146, 235, 265, 365, 470, 517, 530, 583, 730, 803, 1034, 1166, 1606, 2491, 2585, 2915, 3431, 3869, 4015, 4982, 5170, 5830, 6862, 7738, 8030, 12455, 17155, 19345, 24910, 27401, 34310, 37741, 38690, 42559, 54802, 75482, 85118, 137005, 181843, 188705, 212795, 274010, 363686, 377410, 425590, 909215, 1818430, 2000273, 4000546, 10001365, 20002730]

約数ペア:

[(1, 20002730), (2, 10001365), (5, 4000546), (10, 2000273), (11, 1818430), (22, 909215), (47, 425590), (53, 377410), (55, 363686), (73, 274010), (94, 212795), (106, 188705), (110, 181843), (146, 137005), (235, 85118), (265, 75482), (365, 54802), (470, 42559), (517, 38690), (530, 37741), (583, 34310), (730, 27401), (803, 24910), (1034, 19345), (1166, 17155), (1606, 12455), (2491, 8030), (2585, 7738), (2915, 6862), (3431, 5830), (3869, 5170), (4015, 4982)]