20401875

素因数分解:

$3^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:76

約数の個数: 100

約数和(自身を含む): 42336448

約数和(自身を除く): 21934573

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 31, 39, 45, 65, 75, 81, 93, 117, 125, 135, 155, 195, 225, 279, 325, 351, 375, 403, 405, 465, 585, 625, 675, 775, 837, 975, 1053, 1125, 1209, 1395, 1625, 1755, 1875, 2015, 2025, 2325, 2511, 2925, 3375, 3627, 3875, 4185, 4875, 5265, 5625, 6045, 6975, 8125, 8775, 10075, 10125, 10881, 11625, 12555, 14625, 16875, 18135, 19375, 20925, 24375, 26325, 30225, 32643, 34875, 43875, 50375, 50625, 54405, 58125, 62775, 73125, 90675, 104625, 131625, 151125, 163215, 174375, 219375, 251875, 272025, 313875, 453375, 523125, 658125, 755625, 816075, 1360125, 1569375, 2266875, 4080375, 6800625, 20401875]

約数ペア:

[(1, 20401875), (3, 6800625), (5, 4080375), (9, 2266875), (13, 1569375), (15, 1360125), (25, 816075), (27, 755625), (31, 658125), (39, 523125), (45, 453375), (65, 313875), (75, 272025), (81, 251875), (93, 219375), (117, 174375), (125, 163215), (135, 151125), (155, 131625), (195, 104625), (225, 90675), (279, 73125), (325, 62775), (351, 58125), (375, 54405), (403, 50625), (405, 50375), (465, 43875), (585, 34875), (625, 32643), (675, 30225), (775, 26325), (837, 24375), (975, 20925), (1053, 19375), (1125, 18135), (1209, 16875), (1395, 14625), (1625, 12555), (1755, 11625), (1875, 10881), (2015, 10125), (2025, 10075), (2325, 8775), (2511, 8125), (2925, 6975), (3375, 6045), (3627, 5625), (3875, 5265), (4185, 4875)]