25724920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:896

約数の個数: 64

約数和(自身を含む): 63433440

約数和(自身を除く): 37708520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 811, 1220, 1586, 1622, 2440, 3172, 3244, 3965, 4055, 6344, 6488, 7930, 8110, 10543, 15860, 16220, 21086, 31720, 32440, 42172, 49471, 52715, 84344, 98942, 105430, 197884, 210860, 247355, 395768, 421720, 494710, 643123, 989420, 1286246, 1978840, 2572492, 3215615, 5144984, 6431230, 12862460, 25724920]

約数ペア:

[(1, 25724920), (2, 12862460), (4, 6431230), (5, 5144984), (8, 3215615), (10, 2572492), (13, 1978840), (20, 1286246), (26, 989420), (40, 643123), (52, 494710), (61, 421720), (65, 395768), (104, 247355), (122, 210860), (130, 197884), (244, 105430), (260, 98942), (305, 84344), (488, 52715), (520, 49471), (610, 42172), (793, 32440), (811, 31720), (1220, 21086), (1586, 16220), (1622, 15860), (2440, 10543), (3172, 8110), (3244, 7930), (3965, 6488), (4055, 6344)]