19801860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:557

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 41161980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 53, 60, 65, 78, 106, 130, 156, 159, 195, 212, 260, 265, 318, 390, 479, 530, 636, 689, 780, 795, 958, 1060, 1378, 1437, 1590, 1916, 2067, 2395, 2756, 2874, 3180, 3445, 4134, 4790, 5748, 6227, 6890, 7185, 8268, 9580, 10335, 12454, 13780, 14370, 18681, 20670, 24908, 25387, 28740, 31135, 37362, 41340, 50774, 62270, 74724, 76161, 93405, 101548, 124540, 126935, 152322, 186810, 253870, 304644, 330031, 373620, 380805, 507740, 660062, 761610, 990093, 1320124, 1523220, 1650155, 1980186, 3300310, 3960372, 4950465, 6600620, 9900930, 19801860]

約数ペア:

[(1, 19801860), (2, 9900930), (3, 6600620), (4, 4950465), (5, 3960372), (6, 3300310), (10, 1980186), (12, 1650155), (13, 1523220), (15, 1320124), (20, 990093), (26, 761610), (30, 660062), (39, 507740), (52, 380805), (53, 373620), (60, 330031), (65, 304644), (78, 253870), (106, 186810), (130, 152322), (156, 126935), (159, 124540), (195, 101548), (212, 93405), (260, 76161), (265, 74724), (318, 62270), (390, 50774), (479, 41340), (530, 37362), (636, 31135), (689, 28740), (780, 25387), (795, 24908), (958, 20670), (1060, 18681), (1378, 14370), (1437, 13780), (1590, 12454), (1916, 10335), (2067, 9580), (2395, 8268), (2756, 7185), (2874, 6890), (3180, 6227), (3445, 5748), (4134, 4790)]