20662120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{877}}^1$

素因数の和:938

約数の個数: 64

約数和(自身を含む): 50572800

約数和(自身を除く): 29910680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 877, 1178, 1240, 1754, 2356, 2945, 3508, 4385, 4712, 5890, 7016, 8770, 11780, 16663, 17540, 23560, 27187, 33326, 35080, 54374, 66652, 83315, 108748, 133304, 135935, 166630, 217496, 271870, 333260, 516553, 543740, 666520, 1033106, 1087480, 2066212, 2582765, 4132424, 5165530, 10331060, 20662120]

約数ペア:

[(1, 20662120), (2, 10331060), (4, 5165530), (5, 4132424), (8, 2582765), (10, 2066212), (19, 1087480), (20, 1033106), (31, 666520), (38, 543740), (40, 516553), (62, 333260), (76, 271870), (95, 217496), (124, 166630), (152, 135935), (155, 133304), (190, 108748), (248, 83315), (310, 66652), (380, 54374), (589, 35080), (620, 33326), (760, 27187), (877, 23560), (1178, 17540), (1240, 16663), (1754, 11780), (2356, 8770), (2945, 7016), (3508, 5890), (4385, 4712)]