15951940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 34700400

約数和(自身を除く): 18748460

約数列:

[1, 2, 4, 5, 10, 20, 53, 101, 106, 149, 202, 212, 265, 298, 404, 505, 530, 596, 745, 1010, 1060, 1490, 2020, 2980, 5353, 7897, 10706, 15049, 15794, 21412, 26765, 30098, 31588, 39485, 53530, 60196, 75245, 78970, 107060, 150490, 157940, 300980, 797597, 1595194, 3190388, 3987985, 7975970, 15951940]

約数ペア:

[(1, 15951940), (2, 7975970), (4, 3987985), (5, 3190388), (10, 1595194), (20, 797597), (53, 300980), (101, 157940), (106, 150490), (149, 107060), (202, 78970), (212, 75245), (265, 60196), (298, 53530), (404, 39485), (505, 31588), (530, 30098), (596, 26765), (745, 21412), (1010, 15794), (1060, 15049), (1490, 10706), (2020, 7897), (2980, 5353)]