31257140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 67630080

約数和(自身を除く): 36372940

約数列:

[1, 2, 4, 5, 10, 20, 73, 79, 146, 158, 271, 292, 316, 365, 395, 542, 730, 790, 1084, 1355, 1460, 1580, 2710, 5420, 5767, 11534, 19783, 21409, 23068, 28835, 39566, 42818, 57670, 79132, 85636, 98915, 107045, 115340, 197830, 214090, 395660, 428180, 1562857, 3125714, 6251428, 7814285, 15628570, 31257140]

約数ペア:

[(1, 31257140), (2, 15628570), (4, 7814285), (5, 6251428), (10, 3125714), (20, 1562857), (73, 428180), (79, 395660), (146, 214090), (158, 197830), (271, 115340), (292, 107045), (316, 98915), (365, 85636), (395, 79132), (542, 57670), (730, 42818), (790, 39566), (1084, 28835), (1355, 23068), (1460, 21409), (1580, 19783), (2710, 11534), (5420, 5767)]