21646625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 36481536

約数和(自身を除く): 14834911

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 125, 143, 173, 175, 275, 325, 385, 455, 715, 865, 875, 1001, 1211, 1375, 1625, 1903, 1925, 2249, 2275, 3575, 4325, 5005, 6055, 9515, 9625, 11245, 11375, 13321, 15743, 17875, 21625, 24739, 25025, 30275, 47575, 56225, 66605, 78715, 123695, 125125, 151375, 173173, 237875, 281125, 333025, 393575, 618475, 865865, 1665125, 1967875, 3092375, 4329325, 21646625]

約数ペア:

[(1, 21646625), (5, 4329325), (7, 3092375), (11, 1967875), (13, 1665125), (25, 865865), (35, 618475), (55, 393575), (65, 333025), (77, 281125), (91, 237875), (125, 173173), (143, 151375), (173, 125125), (175, 123695), (275, 78715), (325, 66605), (385, 56225), (455, 47575), (715, 30275), (865, 25025), (875, 24739), (1001, 21625), (1211, 17875), (1375, 15743), (1625, 13321), (1903, 11375), (1925, 11245), (2249, 9625), (2275, 9515), (3575, 6055), (4325, 5005)]