20357840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14969}}^1$

素因数の和:14999

約数の個数: 40

約数和(自身を含む): 50119560

約数和(自身を除く): 29761720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14969, 29938, 59876, 74845, 119752, 149690, 239504, 254473, 299380, 508946, 598760, 1017892, 1197520, 1272365, 2035784, 2544730, 4071568, 5089460, 10178920, 20357840]

約数ペア:

[(1, 20357840), (2, 10178920), (4, 5089460), (5, 4071568), (8, 2544730), (10, 2035784), (16, 1272365), (17, 1197520), (20, 1017892), (34, 598760), (40, 508946), (68, 299380), (80, 254473), (85, 239504), (136, 149690), (170, 119752), (272, 74845), (340, 59876), (680, 29938), (1360, 14969)]