21012900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{787}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 61558560

約数和(自身を除く): 40545660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 89, 100, 150, 178, 267, 300, 356, 445, 534, 787, 890, 1068, 1335, 1574, 1780, 2225, 2361, 2670, 3148, 3935, 4450, 4722, 5340, 6675, 7870, 8900, 9444, 11805, 13350, 15740, 19675, 23610, 26700, 39350, 47220, 59025, 70043, 78700, 118050, 140086, 210129, 236100, 280172, 350215, 420258, 700430, 840516, 1050645, 1400860, 1751075, 2101290, 3502150, 4202580, 5253225, 7004300, 10506450, 21012900]

約数ペア:

[(1, 21012900), (2, 10506450), (3, 7004300), (4, 5253225), (5, 4202580), (6, 3502150), (10, 2101290), (12, 1751075), (15, 1400860), (20, 1050645), (25, 840516), (30, 700430), (50, 420258), (60, 350215), (75, 280172), (89, 236100), (100, 210129), (150, 140086), (178, 118050), (267, 78700), (300, 70043), (356, 59025), (445, 47220), (534, 39350), (787, 26700), (890, 23610), (1068, 19675), (1335, 15740), (1574, 13350), (1780, 11805), (2225, 9444), (2361, 8900), (2670, 7870), (3148, 6675), (3935, 5340), (4450, 4722)]