5128240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4931}}^1$

素因数の和:4957

約数の個数: 40

約数和(自身を含む): 12842928

約数和(自身を除く): 7714688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 4931, 9862, 19724, 24655, 39448, 49310, 64103, 78896, 98620, 128206, 197240, 256412, 320515, 394480, 512824, 641030, 1025648, 1282060, 2564120, 5128240]

約数ペア:

[(1, 5128240), (2, 2564120), (4, 1282060), (5, 1025648), (8, 641030), (10, 512824), (13, 394480), (16, 320515), (20, 256412), (26, 197240), (40, 128206), (52, 98620), (65, 78896), (80, 64103), (104, 49310), (130, 39448), (208, 24655), (260, 19724), (520, 9862), (1040, 4931)]