21756800

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:560

約数の個数: 96

約数和(自身を含む): 57991080

約数和(自身を除く): 36234280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 523, 640, 650, 800, 832, 1040, 1046, 1300, 1600, 1664, 2080, 2092, 2600, 2615, 3200, 4160, 4184, 5200, 5230, 6799, 8320, 8368, 10400, 10460, 13075, 13598, 16736, 20800, 20920, 26150, 27196, 33472, 33995, 41600, 41840, 52300, 54392, 66944, 67990, 83680, 104600, 108784, 135980, 167360, 169975, 209200, 217568, 271960, 334720, 339950, 418400, 435136, 543920, 679900, 836800, 870272, 1087840, 1359800, 1673600, 2175680, 2719600, 4351360, 5439200, 10878400, 21756800]

約数ペア:

[(1, 21756800), (2, 10878400), (4, 5439200), (5, 4351360), (8, 2719600), (10, 2175680), (13, 1673600), (16, 1359800), (20, 1087840), (25, 870272), (26, 836800), (32, 679900), (40, 543920), (50, 435136), (52, 418400), (64, 339950), (65, 334720), (80, 271960), (100, 217568), (104, 209200), (128, 169975), (130, 167360), (160, 135980), (200, 108784), (208, 104600), (260, 83680), (320, 67990), (325, 66944), (400, 54392), (416, 52300), (520, 41840), (523, 41600), (640, 33995), (650, 33472), (800, 27196), (832, 26150), (1040, 20920), (1046, 20800), (1300, 16736), (1600, 13598), (1664, 13075), (2080, 10460), (2092, 10400), (2600, 8368), (2615, 8320), (3200, 6799), (4160, 5230), (4184, 5200)]