20171901620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1\times {\mathrm{2803}}^1$

素因数の和:3225

約数の個数: 96

約数和(自身を含む): 46296956160

約数和(自身を除く): 26125054540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 311, 356, 445, 622, 890, 1157, 1244, 1555, 1780, 2314, 2803, 3110, 4043, 4628, 5606, 5785, 6220, 8086, 11212, 11570, 14015, 16172, 20215, 23140, 27679, 28030, 36439, 40430, 55358, 56060, 72878, 80860, 110716, 138395, 145756, 182195, 249467, 276790, 359827, 364390, 498934, 553580, 719654, 728780, 871733, 997868, 1247335, 1439308, 1743466, 1799135, 2494670, 3243071, 3486932, 3598270, 4358665, 4989340, 6486142, 7196540, 8717330, 11332529, 12972284, 16215355, 17434660, 22665058, 32430710, 45330116, 56662645, 64861420, 77584237, 113325290, 155168474, 226650580, 310336948, 387921185, 775842370, 1008595081, 1551684740, 2017190162, 4034380324, 5042975405, 10085950810, 20171901620]

約数ペア:

[(1, 20171901620), (2, 10085950810), (4, 5042975405), (5, 4034380324), (10, 2017190162), (13, 1551684740), (20, 1008595081), (26, 775842370), (52, 387921185), (65, 310336948), (89, 226650580), (130, 155168474), (178, 113325290), (260, 77584237), (311, 64861420), (356, 56662645), (445, 45330116), (622, 32430710), (890, 22665058), (1157, 17434660), (1244, 16215355), (1555, 12972284), (1780, 11332529), (2314, 8717330), (2803, 7196540), (3110, 6486142), (4043, 4989340), (4628, 4358665), (5606, 3598270), (5785, 3486932), (6220, 3243071), (8086, 2494670), (11212, 1799135), (11570, 1743466), (14015, 1439308), (16172, 1247335), (20215, 997868), (23140, 871733), (27679, 728780), (28030, 719654), (36439, 553580), (40430, 498934), (55358, 364390), (56060, 359827), (72878, 276790), (80860, 249467), (110716, 182195), (138395, 145756)]