387446920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{197677}}^1$

素因数の和:197702

約数の個数: 48

約数和(自身を含む): 1014088140

約数和(自身を除く): 626641220

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 197677, 395354, 790708, 988385, 1383739, 1581416, 1976770, 2767478, 3953540, 5534956, 6918695, 7907080, 9686173, 11069912, 13837390, 19372346, 27674780, 38744692, 48430865, 55349560, 77489384, 96861730, 193723460, 387446920]

約数ペア:

[(1, 387446920), (2, 193723460), (4, 96861730), (5, 77489384), (7, 55349560), (8, 48430865), (10, 38744692), (14, 27674780), (20, 19372346), (28, 13837390), (35, 11069912), (40, 9686173), (49, 7907080), (56, 6918695), (70, 5534956), (98, 3953540), (140, 2767478), (196, 1976770), (245, 1581416), (280, 1383739), (392, 988385), (490, 790708), (980, 395354), (1960, 197677)]