21375375

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1$

素因数の和:521

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 21755505

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 125, 175, 255, 357, 375, 425, 479, 525, 595, 875, 1275, 1437, 1785, 2125, 2395, 2625, 2975, 3353, 6375, 7185, 8143, 8925, 10059, 11975, 14875, 16765, 24429, 35925, 40715, 44625, 50295, 57001, 59875, 83825, 122145, 171003, 179625, 203575, 251475, 285005, 419125, 610725, 855015, 1017875, 1257375, 1425025, 3053625, 4275075, 7125125, 21375375]

約数ペア:

[(1, 21375375), (3, 7125125), (5, 4275075), (7, 3053625), (15, 1425025), (17, 1257375), (21, 1017875), (25, 855015), (35, 610725), (51, 419125), (75, 285005), (85, 251475), (105, 203575), (119, 179625), (125, 171003), (175, 122145), (255, 83825), (357, 59875), (375, 57001), (425, 50295), (479, 44625), (525, 40715), (595, 35925), (875, 24429), (1275, 16765), (1437, 14875), (1785, 11975), (2125, 10059), (2395, 8925), (2625, 8143), (2975, 7185), (3353, 6375)]