28211625

素因数分解:

$3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:680

約数の個数: 64

約数和(自身を含む): 56259840

約数和(自身を除く): 28048215

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 125, 135, 195, 225, 325, 351, 375, 585, 643, 675, 975, 1125, 1625, 1755, 1929, 2925, 3215, 3375, 4875, 5787, 8359, 8775, 9645, 14625, 16075, 17361, 25077, 28935, 41795, 43875, 48225, 75231, 80375, 86805, 125385, 144675, 208975, 225693, 241125, 376155, 434025, 626925, 723375, 1044875, 1128465, 1880775, 2170125, 3134625, 5642325, 9403875, 28211625]

約数ペア:

[(1, 28211625), (3, 9403875), (5, 5642325), (9, 3134625), (13, 2170125), (15, 1880775), (25, 1128465), (27, 1044875), (39, 723375), (45, 626925), (65, 434025), (75, 376155), (117, 241125), (125, 225693), (135, 208975), (195, 144675), (225, 125385), (325, 86805), (351, 80375), (375, 75231), (585, 48225), (643, 43875), (675, 41795), (975, 28935), (1125, 25077), (1625, 17361), (1755, 16075), (1929, 14625), (2925, 9645), (3215, 8775), (3375, 8359), (4875, 5787)]