645575775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:154

約数の個数: 108

約数和(自身を含む): 1216790424

約数和(自身を除く): 571214649

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 53, 65, 75, 93, 155, 159, 169, 195, 265, 325, 403, 465, 507, 689, 775, 795, 845, 961, 975, 1209, 1325, 1643, 2015, 2067, 2325, 2535, 2883, 3445, 3975, 4225, 4805, 4929, 5239, 6045, 8215, 8957, 10075, 10335, 12493, 12675, 14415, 15717, 17225, 21359, 24025, 24645, 26195, 26871, 30225, 37479, 41075, 44785, 50933, 51675, 62465, 64077, 72075, 78585, 106795, 123225, 130975, 134355, 152799, 162409, 187395, 223925, 254665, 277667, 312325, 320385, 392925, 487227, 533975, 662129, 671775, 763995, 812045, 833001, 936975, 1273325, 1388335, 1601925, 1986387, 2436135, 3310645, 3819975, 4060225, 4165005, 6941675, 8607677, 9931935, 12180675, 16553225, 20825025, 25823031, 43038385, 49659675, 129115155, 215191925, 645575775]

約数ペア:

[(1, 645575775), (3, 215191925), (5, 129115155), (13, 49659675), (15, 43038385), (25, 25823031), (31, 20825025), (39, 16553225), (53, 12180675), (65, 9931935), (75, 8607677), (93, 6941675), (155, 4165005), (159, 4060225), (169, 3819975), (195, 3310645), (265, 2436135), (325, 1986387), (403, 1601925), (465, 1388335), (507, 1273325), (689, 936975), (775, 833001), (795, 812045), (845, 763995), (961, 671775), (975, 662129), (1209, 533975), (1325, 487227), (1643, 392925), (2015, 320385), (2067, 312325), (2325, 277667), (2535, 254665), (2883, 223925), (3445, 187395), (3975, 162409), (4225, 152799), (4805, 134355), (4929, 130975), (5239, 123225), (6045, 106795), (8215, 78585), (8957, 72075), (10075, 64077), (10335, 62465), (12493, 51675), (12675, 50933), (14415, 44785), (15717, 41075), (17225, 37479), (21359, 30225), (24025, 26871), (24645, 26195)]