19881000

素因数分解:

$2^3\times 3^2\times 5^3\times {\mathrm{47}}^2$

素因数の和:121

約数の個数: 144

約数和(自身を含む): 68657940

約数和(自身を除く): 48776940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 47, 50, 60, 72, 75, 90, 94, 100, 120, 125, 141, 150, 180, 188, 200, 225, 235, 250, 282, 300, 360, 375, 376, 423, 450, 470, 500, 564, 600, 705, 750, 846, 900, 940, 1000, 1125, 1128, 1175, 1410, 1500, 1692, 1800, 1880, 2115, 2209, 2250, 2350, 2820, 3000, 3384, 3525, 4230, 4418, 4500, 4700, 5640, 5875, 6627, 7050, 8460, 8836, 9000, 9400, 10575, 11045, 11750, 13254, 14100, 16920, 17625, 17672, 19881, 21150, 22090, 23500, 26508, 28200, 33135, 35250, 39762, 42300, 44180, 47000, 52875, 53016, 55225, 66270, 70500, 79524, 84600, 88360, 99405, 105750, 110450, 132540, 141000, 159048, 165675, 198810, 211500, 220900, 265080, 276125, 331350, 397620, 423000, 441800, 497025, 552250, 662700, 795240, 828375, 994050, 1104500, 1325400, 1656750, 1988100, 2209000, 2485125, 3313500, 3976200, 4970250, 6627000, 9940500, 19881000]

約数ペア:

[(1, 19881000), (2, 9940500), (3, 6627000), (4, 4970250), (5, 3976200), (6, 3313500), (8, 2485125), (9, 2209000), (10, 1988100), (12, 1656750), (15, 1325400), (18, 1104500), (20, 994050), (24, 828375), (25, 795240), (30, 662700), (36, 552250), (40, 497025), (45, 441800), (47, 423000), (50, 397620), (60, 331350), (72, 276125), (75, 265080), (90, 220900), (94, 211500), (100, 198810), (120, 165675), (125, 159048), (141, 141000), (150, 132540), (180, 110450), (188, 105750), (200, 99405), (225, 88360), (235, 84600), (250, 79524), (282, 70500), (300, 66270), (360, 55225), (375, 53016), (376, 52875), (423, 47000), (450, 44180), (470, 42300), (500, 39762), (564, 35250), (600, 33135), (705, 28200), (750, 26508), (846, 23500), (900, 22090), (940, 21150), (1000, 19881), (1125, 17672), (1128, 17625), (1175, 16920), (1410, 14100), (1500, 13254), (1692, 11750), (1800, 11045), (1880, 10575), (2115, 9400), (2209, 9000), (2250, 8836), (2350, 8460), (2820, 7050), (3000, 6627), (3384, 5875), (3525, 5640), (4230, 4700), (4418, 4500)]