31201660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:203

約数の個数: 96

約数和(自身を含む): 78769152

約数和(自身を除く): 47567492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 71, 73, 86, 140, 142, 146, 172, 215, 284, 292, 301, 355, 365, 430, 497, 511, 602, 710, 730, 860, 994, 1022, 1204, 1420, 1460, 1505, 1988, 2044, 2485, 2555, 3010, 3053, 3139, 4970, 5110, 5183, 6020, 6106, 6278, 9940, 10220, 10366, 12212, 12556, 15265, 15695, 20732, 21371, 21973, 25915, 30530, 31390, 36281, 42742, 43946, 51830, 61060, 62780, 72562, 85484, 87892, 103660, 106855, 109865, 145124, 181405, 213710, 219730, 222869, 362810, 427420, 439460, 445738, 725620, 891476, 1114345, 1560083, 2228690, 3120166, 4457380, 6240332, 7800415, 15600830, 31201660]

約数ペア:

[(1, 31201660), (2, 15600830), (4, 7800415), (5, 6240332), (7, 4457380), (10, 3120166), (14, 2228690), (20, 1560083), (28, 1114345), (35, 891476), (43, 725620), (70, 445738), (71, 439460), (73, 427420), (86, 362810), (140, 222869), (142, 219730), (146, 213710), (172, 181405), (215, 145124), (284, 109865), (292, 106855), (301, 103660), (355, 87892), (365, 85484), (430, 72562), (497, 62780), (511, 61060), (602, 51830), (710, 43946), (730, 42742), (860, 36281), (994, 31390), (1022, 30530), (1204, 25915), (1420, 21973), (1460, 21371), (1505, 20732), (1988, 15695), (2044, 15265), (2485, 12556), (2555, 12212), (3010, 10366), (3053, 10220), (3139, 9940), (4970, 6278), (5110, 6106), (5183, 6020)]