18880984

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4007}}^1$

素因数の和:4063

約数の個数: 32

約数和(自身を含む): 38476800

約数和(自身を除く): 19595816

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 124, 152, 248, 589, 1178, 2356, 4007, 4712, 8014, 16028, 32056, 76133, 124217, 152266, 248434, 304532, 496868, 609064, 993736, 2360123, 4720246, 9440492, 18880984]

約数ペア:

[(1, 18880984), (2, 9440492), (4, 4720246), (8, 2360123), (19, 993736), (31, 609064), (38, 496868), (62, 304532), (76, 248434), (124, 152266), (152, 124217), (248, 76133), (589, 32056), (1178, 16028), (2356, 8014), (4007, 4712)]