19906920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{457}}^1$

素因数の和:496

約数の個数: 144

約数和(自身を含む): 71269380

約数和(自身を除く): 51362460

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 121, 132, 165, 180, 198, 220, 242, 264, 330, 360, 363, 396, 440, 457, 484, 495, 605, 660, 726, 792, 914, 968, 990, 1089, 1210, 1320, 1371, 1452, 1815, 1828, 1980, 2178, 2285, 2420, 2742, 2904, 3630, 3656, 3960, 4113, 4356, 4570, 4840, 5027, 5445, 5484, 6855, 7260, 8226, 8712, 9140, 10054, 10890, 10968, 13710, 14520, 15081, 16452, 18280, 20108, 20565, 21780, 25135, 27420, 30162, 32904, 40216, 41130, 43560, 45243, 50270, 54840, 55297, 60324, 75405, 82260, 90486, 100540, 110594, 120648, 150810, 164520, 165891, 180972, 201080, 221188, 226215, 276485, 301620, 331782, 361944, 442376, 452430, 497673, 552970, 603240, 663564, 829455, 904860, 995346, 1105940, 1327128, 1658910, 1809720, 1990692, 2211880, 2488365, 3317820, 3981384, 4976730, 6635640, 9953460, 19906920]

約数ペア:

[(1, 19906920), (2, 9953460), (3, 6635640), (4, 4976730), (5, 3981384), (6, 3317820), (8, 2488365), (9, 2211880), (10, 1990692), (11, 1809720), (12, 1658910), (15, 1327128), (18, 1105940), (20, 995346), (22, 904860), (24, 829455), (30, 663564), (33, 603240), (36, 552970), (40, 497673), (44, 452430), (45, 442376), (55, 361944), (60, 331782), (66, 301620), (72, 276485), (88, 226215), (90, 221188), (99, 201080), (110, 180972), (120, 165891), (121, 164520), (132, 150810), (165, 120648), (180, 110594), (198, 100540), (220, 90486), (242, 82260), (264, 75405), (330, 60324), (360, 55297), (363, 54840), (396, 50270), (440, 45243), (457, 43560), (484, 41130), (495, 40216), (605, 32904), (660, 30162), (726, 27420), (792, 25135), (914, 21780), (968, 20565), (990, 20108), (1089, 18280), (1210, 16452), (1320, 15081), (1371, 14520), (1452, 13710), (1815, 10968), (1828, 10890), (1980, 10054), (2178, 9140), (2285, 8712), (2420, 8226), (2742, 7260), (2904, 6855), (3630, 5484), (3656, 5445), (3960, 5027), (4113, 4840), (4356, 4570)]