21751600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 36369680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 47, 50, 52, 65, 80, 89, 94, 100, 104, 130, 178, 188, 200, 208, 235, 260, 325, 356, 376, 400, 445, 470, 520, 611, 650, 712, 752, 890, 940, 1040, 1157, 1175, 1222, 1300, 1424, 1780, 1880, 2225, 2314, 2350, 2444, 2600, 3055, 3560, 3760, 4183, 4450, 4628, 4700, 4888, 5200, 5785, 6110, 7120, 8366, 8900, 9256, 9400, 9776, 11570, 12220, 15275, 16732, 17800, 18512, 18800, 20915, 23140, 24440, 28925, 30550, 33464, 35600, 41830, 46280, 48880, 54379, 57850, 61100, 66928, 83660, 92560, 104575, 108758, 115700, 122200, 167320, 209150, 217516, 231400, 244400, 271895, 334640, 418300, 435032, 462800, 543790, 836600, 870064, 1087580, 1359475, 1673200, 2175160, 2718950, 4350320, 5437900, 10875800, 21751600]

約数ペア:

[(1, 21751600), (2, 10875800), (4, 5437900), (5, 4350320), (8, 2718950), (10, 2175160), (13, 1673200), (16, 1359475), (20, 1087580), (25, 870064), (26, 836600), (40, 543790), (47, 462800), (50, 435032), (52, 418300), (65, 334640), (80, 271895), (89, 244400), (94, 231400), (100, 217516), (104, 209150), (130, 167320), (178, 122200), (188, 115700), (200, 108758), (208, 104575), (235, 92560), (260, 83660), (325, 66928), (356, 61100), (376, 57850), (400, 54379), (445, 48880), (470, 46280), (520, 41830), (611, 35600), (650, 33464), (712, 30550), (752, 28925), (890, 24440), (940, 23140), (1040, 20915), (1157, 18800), (1175, 18512), (1222, 17800), (1300, 16732), (1424, 15275), (1780, 12220), (1880, 11570), (2225, 9776), (2314, 9400), (2350, 9256), (2444, 8900), (2600, 8366), (3055, 7120), (3560, 6110), (3760, 5785), (4183, 5200), (4450, 4888), (4628, 4700)]