25672960

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:699

約数の個数: 72

約数和(自身を含む): 63576576

約数和(自身を除く): 37903616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 647, 992, 1240, 1280, 1294, 1984, 2480, 2588, 3235, 3968, 4960, 5176, 6470, 7936, 9920, 10352, 12940, 19840, 20057, 20704, 25880, 39680, 40114, 41408, 51760, 80228, 82816, 100285, 103520, 160456, 165632, 200570, 207040, 320912, 401140, 414080, 641824, 802280, 828160, 1283648, 1604560, 2567296, 3209120, 5134592, 6418240, 12836480, 25672960]

約数ペア:

[(1, 25672960), (2, 12836480), (4, 6418240), (5, 5134592), (8, 3209120), (10, 2567296), (16, 1604560), (20, 1283648), (31, 828160), (32, 802280), (40, 641824), (62, 414080), (64, 401140), (80, 320912), (124, 207040), (128, 200570), (155, 165632), (160, 160456), (248, 103520), (256, 100285), (310, 82816), (320, 80228), (496, 51760), (620, 41408), (640, 40114), (647, 39680), (992, 25880), (1240, 20704), (1280, 20057), (1294, 19840), (1984, 12940), (2480, 10352), (2588, 9920), (3235, 7936), (3968, 6470), (4960, 5176)]