20120880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6449}}^1$

素因数の和:6478

約数の個数: 80

約数和(自身を含む): 67183200

約数和(自身を除く): 47062320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6449, 12898, 19347, 25796, 32245, 38694, 51592, 64490, 77388, 83837, 96735, 103184, 128980, 154776, 167674, 193470, 251511, 257960, 309552, 335348, 386940, 419185, 503022, 515920, 670696, 773880, 838370, 1006044, 1257555, 1341392, 1547760, 1676740, 2012088, 2515110, 3353480, 4024176, 5030220, 6706960, 10060440, 20120880]

約数ペア:

[(1, 20120880), (2, 10060440), (3, 6706960), (4, 5030220), (5, 4024176), (6, 3353480), (8, 2515110), (10, 2012088), (12, 1676740), (13, 1547760), (15, 1341392), (16, 1257555), (20, 1006044), (24, 838370), (26, 773880), (30, 670696), (39, 515920), (40, 503022), (48, 419185), (52, 386940), (60, 335348), (65, 309552), (78, 257960), (80, 251511), (104, 193470), (120, 167674), (130, 154776), (156, 128980), (195, 103184), (208, 96735), (240, 83837), (260, 77388), (312, 64490), (390, 51592), (520, 38694), (624, 32245), (780, 25796), (1040, 19347), (1560, 12898), (3120, 6449)]