21299940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1621}}^1$

素因数の和:1709

約数の個数: 72

約数和(自身を含む): 65535288

約数和(自身を除く): 44235348

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1621, 2190, 2628, 3242, 3285, 4380, 4863, 6484, 6570, 8105, 9726, 13140, 14589, 16210, 19452, 24315, 29178, 32420, 48630, 58356, 72945, 97260, 118333, 145890, 236666, 291780, 354999, 473332, 591665, 709998, 1064997, 1183330, 1419996, 1774995, 2129994, 2366660, 3549990, 4259988, 5324985, 7099980, 10649970, 21299940]

約数ペア:

[(1, 21299940), (2, 10649970), (3, 7099980), (4, 5324985), (5, 4259988), (6, 3549990), (9, 2366660), (10, 2129994), (12, 1774995), (15, 1419996), (18, 1183330), (20, 1064997), (30, 709998), (36, 591665), (45, 473332), (60, 354999), (73, 291780), (90, 236666), (146, 145890), (180, 118333), (219, 97260), (292, 72945), (365, 58356), (438, 48630), (657, 32420), (730, 29178), (876, 24315), (1095, 19452), (1314, 16210), (1460, 14589), (1621, 13140), (2190, 9726), (2628, 8105), (3242, 6570), (3285, 6484), (4380, 4863)]