19961520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2683}}^1$

素因数の和:2730

約数の個数: 80

約数和(自身を含む): 63900672

約数和(自身を除く): 43939152

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2683, 3720, 5366, 7440, 8049, 10732, 13415, 16098, 21464, 26830, 32196, 40245, 42928, 53660, 64392, 80490, 83173, 107320, 128784, 160980, 166346, 214640, 249519, 321960, 332692, 415865, 499038, 643920, 665384, 831730, 998076, 1247595, 1330768, 1663460, 1996152, 2495190, 3326920, 3992304, 4990380, 6653840, 9980760, 19961520]

約数ペア:

[(1, 19961520), (2, 9980760), (3, 6653840), (4, 4990380), (5, 3992304), (6, 3326920), (8, 2495190), (10, 1996152), (12, 1663460), (15, 1330768), (16, 1247595), (20, 998076), (24, 831730), (30, 665384), (31, 643920), (40, 499038), (48, 415865), (60, 332692), (62, 321960), (80, 249519), (93, 214640), (120, 166346), (124, 160980), (155, 128784), (186, 107320), (240, 83173), (248, 80490), (310, 64392), (372, 53660), (465, 42928), (496, 40245), (620, 32196), (744, 26830), (930, 21464), (1240, 16098), (1488, 13415), (1860, 10732), (2480, 8049), (2683, 7440), (3720, 5366)]