78606940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 168848064

約数和(自身を除く): 90241124

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 197, 281, 284, 355, 394, 562, 710, 788, 985, 1124, 1405, 1420, 1970, 2810, 3940, 5620, 13987, 19951, 27974, 39902, 55357, 55948, 69935, 79804, 99755, 110714, 139870, 199510, 221428, 276785, 279740, 399020, 553570, 1107140, 3930347, 7860694, 15721388, 19651735, 39303470, 78606940]

約数ペア:

[(1, 78606940), (2, 39303470), (4, 19651735), (5, 15721388), (10, 7860694), (20, 3930347), (71, 1107140), (142, 553570), (197, 399020), (281, 279740), (284, 276785), (355, 221428), (394, 199510), (562, 139870), (710, 110714), (788, 99755), (985, 79804), (1124, 69935), (1405, 55948), (1420, 55357), (1970, 39902), (2810, 27974), (3940, 19951), (5620, 13987)]