25431880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 60984000

約数和(自身を除く): 35552120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 190, 218, 307, 380, 436, 545, 614, 760, 872, 1090, 1228, 1535, 2071, 2180, 2456, 3070, 4142, 4360, 5833, 6140, 8284, 10355, 11666, 12280, 16568, 20710, 23332, 29165, 33463, 41420, 46664, 58330, 66926, 82840, 116660, 133852, 167315, 233320, 267704, 334630, 635797, 669260, 1271594, 1338520, 2543188, 3178985, 5086376, 6357970, 12715940, 25431880]

約数ペア:

[(1, 25431880), (2, 12715940), (4, 6357970), (5, 5086376), (8, 3178985), (10, 2543188), (19, 1338520), (20, 1271594), (38, 669260), (40, 635797), (76, 334630), (95, 267704), (109, 233320), (152, 167315), (190, 133852), (218, 116660), (307, 82840), (380, 66926), (436, 58330), (545, 46664), (614, 41420), (760, 33463), (872, 29165), (1090, 23332), (1228, 20710), (1535, 16568), (2071, 12280), (2180, 11666), (2456, 10355), (3070, 8284), (4142, 6140), (4360, 5833)]