821570212

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{2141}}^1$

素因数の和:2308

約数の個数: 48

約数和(自身を含む): 1551699072

約数和(自身を除く): 730128860

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 97, 172, 194, 388, 989, 1978, 2141, 2231, 3956, 4171, 4282, 4462, 8342, 8564, 8924, 16684, 49243, 92063, 95933, 98486, 184126, 191866, 196972, 207677, 368252, 383732, 415354, 830708, 2117449, 4234898, 4776571, 8469796, 8930111, 9553142, 17860222, 19106284, 35720444, 205392553, 410785106, 821570212]

約数ペア:

[(1, 821570212), (2, 410785106), (4, 205392553), (23, 35720444), (43, 19106284), (46, 17860222), (86, 9553142), (92, 8930111), (97, 8469796), (172, 4776571), (194, 4234898), (388, 2117449), (989, 830708), (1978, 415354), (2141, 383732), (2231, 368252), (3956, 207677), (4171, 196972), (4282, 191866), (4462, 184126), (8342, 98486), (8564, 95933), (8924, 92063), (16684, 49243)]