25781080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1153}}^1$

素因数の和:1220

約数の個数: 64

約数和(自身を含む): 63977760

約数和(自身を除く): 38196680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1153, 1720, 2236, 2306, 2795, 4472, 4612, 5590, 5765, 9224, 11180, 11530, 14989, 22360, 23060, 29978, 46120, 49579, 59956, 74945, 99158, 119912, 149890, 198316, 247895, 299780, 396632, 495790, 599560, 644527, 991580, 1289054, 1983160, 2578108, 3222635, 5156216, 6445270, 12890540, 25781080]

約数ペア:

[(1, 25781080), (2, 12890540), (4, 6445270), (5, 5156216), (8, 3222635), (10, 2578108), (13, 1983160), (20, 1289054), (26, 991580), (40, 644527), (43, 599560), (52, 495790), (65, 396632), (86, 299780), (104, 247895), (130, 198316), (172, 149890), (215, 119912), (260, 99158), (344, 74945), (430, 59956), (520, 49579), (559, 46120), (860, 29978), (1118, 23060), (1153, 22360), (1720, 14989), (2236, 11530), (2306, 11180), (2795, 9224), (4472, 5765), (4612, 5590)]