27971775

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 55111056

約数和(自身を除く): 27139281

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 73, 75, 117, 131, 195, 219, 225, 325, 365, 393, 585, 655, 657, 949, 975, 1095, 1179, 1703, 1825, 1965, 2847, 2925, 3275, 3285, 4745, 5109, 5475, 5895, 8515, 8541, 9563, 9825, 14235, 15327, 16425, 23725, 25545, 28689, 29475, 42575, 42705, 47815, 71175, 76635, 86067, 124319, 127725, 143445, 213525, 239075, 372957, 383175, 430335, 621595, 717225, 1118871, 1864785, 2151675, 3107975, 5594355, 9323925, 27971775]

約数ペア:

[(1, 27971775), (3, 9323925), (5, 5594355), (9, 3107975), (13, 2151675), (15, 1864785), (25, 1118871), (39, 717225), (45, 621595), (65, 430335), (73, 383175), (75, 372957), (117, 239075), (131, 213525), (195, 143445), (219, 127725), (225, 124319), (325, 86067), (365, 76635), (393, 71175), (585, 47815), (655, 42705), (657, 42575), (949, 29475), (975, 28689), (1095, 25545), (1179, 23725), (1703, 16425), (1825, 15327), (1965, 14235), (2847, 9825), (2925, 9563), (3275, 8541), (3285, 8515), (4745, 5895), (5109, 5475)]