20199402125

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^2\times {\mathrm{151}}^1$

素因数の和:253

約数の個数: 144

約数和(自身を含む): 32204879616

約数和(自身を除く): 12005477491

約数列:

[1, 5, 7, 17, 23, 25, 35, 85, 115, 119, 125, 151, 161, 175, 289, 391, 425, 529, 575, 595, 755, 805, 875, 1057, 1445, 1955, 2023, 2125, 2567, 2645, 2737, 2875, 2975, 3473, 3703, 3775, 4025, 5285, 6647, 7225, 8993, 9775, 10115, 12835, 13225, 13685, 14875, 17365, 17969, 18515, 18875, 20125, 24311, 26425, 33235, 36125, 43639, 44965, 46529, 48875, 50575, 59041, 62951, 64175, 66125, 68425, 79879, 86825, 89845, 92575, 121555, 132125, 152881, 166175, 218195, 224825, 232645, 252875, 295205, 305473, 314755, 320875, 342125, 399395, 413287, 434125, 449225, 462875, 559153, 607775, 764405, 830875, 1003697, 1070167, 1090975, 1124125, 1163225, 1357943, 1476025, 1527365, 1573775, 1996975, 2066435, 2246125, 2795765, 3038875, 3822025, 5018485, 5350835, 5454875, 5816125, 6789715, 7025879, 7380125, 7636825, 7868875, 9505601, 9984875, 10332175, 13978825, 19110125, 23085031, 25092425, 26754175, 33948575, 35129395, 38184125, 47528005, 51660875, 69894125, 115425155, 125462125, 133770875, 161595217, 169742875, 175646975, 237640025, 577125775, 807976085, 878234875, 1188200125, 2885628875, 4039880425, 20199402125]

約数ペア:

[(1, 20199402125), (5, 4039880425), (7, 2885628875), (17, 1188200125), (23, 878234875), (25, 807976085), (35, 577125775), (85, 237640025), (115, 175646975), (119, 169742875), (125, 161595217), (151, 133770875), (161, 125462125), (175, 115425155), (289, 69894125), (391, 51660875), (425, 47528005), (529, 38184125), (575, 35129395), (595, 33948575), (755, 26754175), (805, 25092425), (875, 23085031), (1057, 19110125), (1445, 13978825), (1955, 10332175), (2023, 9984875), (2125, 9505601), (2567, 7868875), (2645, 7636825), (2737, 7380125), (2875, 7025879), (2975, 6789715), (3473, 5816125), (3703, 5454875), (3775, 5350835), (4025, 5018485), (5285, 3822025), (6647, 3038875), (7225, 2795765), (8993, 2246125), (9775, 2066435), (10115, 1996975), (12835, 1573775), (13225, 1527365), (13685, 1476025), (14875, 1357943), (17365, 1163225), (17969, 1124125), (18515, 1090975), (18875, 1070167), (20125, 1003697), (24311, 830875), (26425, 764405), (33235, 607775), (36125, 559153), (43639, 462875), (44965, 449225), (46529, 434125), (48875, 413287), (50575, 399395), (59041, 342125), (62951, 320875), (64175, 314755), (66125, 305473), (68425, 295205), (79879, 252875), (86825, 232645), (89845, 224825), (92575, 218195), (121555, 166175), (132125, 152881)]