20290800

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:515

約数の個数: 120

約数和(自身を含む): 66900976

約数和(自身を除く): 46610176

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 37, 40, 48, 50, 60, 74, 75, 80, 100, 111, 120, 148, 150, 185, 200, 222, 240, 296, 300, 370, 400, 444, 457, 555, 592, 600, 740, 888, 914, 925, 1110, 1200, 1371, 1480, 1776, 1828, 1850, 2220, 2285, 2742, 2775, 2960, 3656, 3700, 4440, 4570, 5484, 5550, 6855, 7312, 7400, 8880, 9140, 10968, 11100, 11425, 13710, 14800, 16909, 18280, 21936, 22200, 22850, 27420, 33818, 34275, 36560, 44400, 45700, 50727, 54840, 67636, 68550, 84545, 91400, 101454, 109680, 135272, 137100, 169090, 182800, 202908, 253635, 270544, 274200, 338180, 405816, 422725, 507270, 548400, 676360, 811632, 845450, 1014540, 1268175, 1352720, 1690900, 2029080, 2536350, 3381800, 4058160, 5072700, 6763600, 10145400, 20290800]

約数ペア:

[(1, 20290800), (2, 10145400), (3, 6763600), (4, 5072700), (5, 4058160), (6, 3381800), (8, 2536350), (10, 2029080), (12, 1690900), (15, 1352720), (16, 1268175), (20, 1014540), (24, 845450), (25, 811632), (30, 676360), (37, 548400), (40, 507270), (48, 422725), (50, 405816), (60, 338180), (74, 274200), (75, 270544), (80, 253635), (100, 202908), (111, 182800), (120, 169090), (148, 137100), (150, 135272), (185, 109680), (200, 101454), (222, 91400), (240, 84545), (296, 68550), (300, 67636), (370, 54840), (400, 50727), (444, 45700), (457, 44400), (555, 36560), (592, 34275), (600, 33818), (740, 27420), (888, 22850), (914, 22200), (925, 21936), (1110, 18280), (1200, 16909), (1371, 14800), (1480, 13710), (1776, 11425), (1828, 11100), (1850, 10968), (2220, 9140), (2285, 8880), (2742, 7400), (2775, 7312), (2960, 6855), (3656, 5550), (3700, 5484), (4440, 4570)]