8103940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 18627840

約数和(自身を除く): 10523900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 439, 710, 878, 923, 1420, 1756, 1846, 2195, 3692, 4390, 4615, 5707, 8780, 9230, 11414, 18460, 22828, 28535, 31169, 57070, 62338, 114140, 124676, 155845, 311690, 405197, 623380, 810394, 1620788, 2025985, 4051970, 8103940]

約数ペア:

[(1, 8103940), (2, 4051970), (4, 2025985), (5, 1620788), (10, 810394), (13, 623380), (20, 405197), (26, 311690), (52, 155845), (65, 124676), (71, 114140), (130, 62338), (142, 57070), (260, 31169), (284, 28535), (355, 22828), (439, 18460), (710, 11414), (878, 9230), (923, 8780), (1420, 5707), (1756, 4615), (1846, 4390), (2195, 3692)]