18109871840

素因数分解:

$2^5\times 5^1\times {\mathrm{283}}^1\times {\mathrm{399953}}^1$

素因数の和:400251

約数の個数: 48

約数和(自身を含む): 42935861808

約数和(自身を除く): 24825989968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 283, 566, 1132, 1415, 2264, 2830, 4528, 5660, 9056, 11320, 22640, 45280, 399953, 799906, 1599812, 1999765, 3199624, 3999530, 6399248, 7999060, 12798496, 15998120, 31996240, 63992480, 113186699, 226373398, 452746796, 565933495, 905493592, 1131866990, 1810987184, 2263733980, 3621974368, 4527467960, 9054935920, 18109871840]

約数ペア:

[(1, 18109871840), (2, 9054935920), (4, 4527467960), (5, 3621974368), (8, 2263733980), (10, 1810987184), (16, 1131866990), (20, 905493592), (32, 565933495), (40, 452746796), (80, 226373398), (160, 113186699), (283, 63992480), (566, 31996240), (1132, 15998120), (1415, 12798496), (2264, 7999060), (2830, 6399248), (4528, 3999530), (5660, 3199624), (9056, 1999765), (11320, 1599812), (22640, 799906), (45280, 399953)]