20532840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{431}}^1$

素因数の和:842

約数の個数: 64

約数和(自身を含む): 61896960

約数和(自身を除く): 41364120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 397, 431, 794, 862, 1191, 1293, 1588, 1724, 1985, 2155, 2382, 2586, 3176, 3448, 3970, 4310, 4764, 5172, 5955, 6465, 7940, 8620, 9528, 10344, 11910, 12930, 15880, 17240, 23820, 25860, 47640, 51720, 171107, 342214, 513321, 684428, 855535, 1026642, 1368856, 1711070, 2053284, 2566605, 3422140, 4106568, 5133210, 6844280, 10266420, 20532840]

約数ペア:

[(1, 20532840), (2, 10266420), (3, 6844280), (4, 5133210), (5, 4106568), (6, 3422140), (8, 2566605), (10, 2053284), (12, 1711070), (15, 1368856), (20, 1026642), (24, 855535), (30, 684428), (40, 513321), (60, 342214), (120, 171107), (397, 51720), (431, 47640), (794, 25860), (862, 23820), (1191, 17240), (1293, 15880), (1588, 12930), (1724, 11910), (1985, 10344), (2155, 9528), (2382, 8620), (2586, 7940), (3176, 6465), (3448, 5955), (3970, 5172), (4310, 4764)]