20009600

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^2\times {\mathrm{37}}^1$

素因数の和:87

約数の個数: 144

約数和(自身を含む): 54971370

約数和(自身を除く): 34961770

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 37, 40, 50, 52, 64, 65, 74, 80, 100, 104, 128, 130, 148, 160, 169, 185, 200, 208, 260, 296, 320, 325, 338, 370, 400, 416, 481, 520, 592, 640, 650, 676, 740, 800, 832, 845, 925, 962, 1040, 1184, 1300, 1352, 1480, 1600, 1664, 1690, 1850, 1924, 2080, 2368, 2405, 2600, 2704, 2960, 3200, 3380, 3700, 3848, 4160, 4225, 4736, 4810, 5200, 5408, 5920, 6253, 6760, 7400, 7696, 8320, 8450, 9620, 10400, 10816, 11840, 12025, 12506, 13520, 14800, 15392, 16900, 19240, 20800, 21632, 23680, 24050, 25012, 27040, 29600, 30784, 31265, 33800, 38480, 41600, 48100, 50024, 54080, 59200, 61568, 62530, 67600, 76960, 96200, 100048, 108160, 118400, 125060, 135200, 153920, 156325, 192400, 200096, 250120, 270400, 307840, 312650, 384800, 400192, 500240, 540800, 625300, 769600, 800384, 1000480, 1250600, 1539200, 2000960, 2501200, 4001920, 5002400, 10004800, 20009600]

約数ペア:

[(1, 20009600), (2, 10004800), (4, 5002400), (5, 4001920), (8, 2501200), (10, 2000960), (13, 1539200), (16, 1250600), (20, 1000480), (25, 800384), (26, 769600), (32, 625300), (37, 540800), (40, 500240), (50, 400192), (52, 384800), (64, 312650), (65, 307840), (74, 270400), (80, 250120), (100, 200096), (104, 192400), (128, 156325), (130, 153920), (148, 135200), (160, 125060), (169, 118400), (185, 108160), (200, 100048), (208, 96200), (260, 76960), (296, 67600), (320, 62530), (325, 61568), (338, 59200), (370, 54080), (400, 50024), (416, 48100), (481, 41600), (520, 38480), (592, 33800), (640, 31265), (650, 30784), (676, 29600), (740, 27040), (800, 25012), (832, 24050), (845, 23680), (925, 21632), (962, 20800), (1040, 19240), (1184, 16900), (1300, 15392), (1352, 14800), (1480, 13520), (1600, 12506), (1664, 12025), (1690, 11840), (1850, 10816), (1924, 10400), (2080, 9620), (2368, 8450), (2405, 8320), (2600, 7696), (2704, 7400), (2960, 6760), (3200, 6253), (3380, 5920), (3700, 5408), (3848, 5200), (4160, 4810), (4225, 4736)]