21953428

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 23487212

約数列:

[1, 2, 4, 7, 14, 28, 59, 97, 118, 137, 194, 236, 274, 388, 413, 548, 679, 826, 959, 1358, 1652, 1918, 2716, 3836, 5723, 8083, 11446, 13289, 16166, 22892, 26578, 32332, 40061, 53156, 56581, 80122, 93023, 113162, 160244, 186046, 226324, 372092, 784051, 1568102, 3136204, 5488357, 10976714, 21953428]

約数ペア:

[(1, 21953428), (2, 10976714), (4, 5488357), (7, 3136204), (14, 1568102), (28, 784051), (59, 372092), (97, 226324), (118, 186046), (137, 160244), (194, 113162), (236, 93023), (274, 80122), (388, 56581), (413, 53156), (548, 40061), (679, 32332), (826, 26578), (959, 22892), (1358, 16166), (1652, 13289), (1918, 11446), (2716, 8083), (3836, 5723)]