20479950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:730

約数の個数: 72

約数和(自身を含む): 55884816

約数和(自身を除く): 35404866

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 71, 75, 90, 142, 150, 213, 225, 355, 426, 450, 639, 641, 710, 1065, 1278, 1282, 1775, 1923, 2130, 3195, 3205, 3550, 3846, 5325, 5769, 6390, 6410, 9615, 10650, 11538, 15975, 16025, 19230, 28845, 31950, 32050, 45511, 48075, 57690, 91022, 96150, 136533, 144225, 227555, 273066, 288450, 409599, 455110, 682665, 819198, 1137775, 1365330, 2047995, 2275550, 3413325, 4095990, 6826650, 10239975, 20479950]

約数ペア:

[(1, 20479950), (2, 10239975), (3, 6826650), (5, 4095990), (6, 3413325), (9, 2275550), (10, 2047995), (15, 1365330), (18, 1137775), (25, 819198), (30, 682665), (45, 455110), (50, 409599), (71, 288450), (75, 273066), (90, 227555), (142, 144225), (150, 136533), (213, 96150), (225, 91022), (355, 57690), (426, 48075), (450, 45511), (639, 32050), (641, 31950), (710, 28845), (1065, 19230), (1278, 16025), (1282, 15975), (1775, 11538), (1923, 10650), (2130, 9615), (3195, 6410), (3205, 6390), (3550, 5769), (3846, 5325)]