28879875

素因数分解:

$3^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 54912000

約数和(自身を除く): 26032125

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 125, 129, 135, 199, 215, 225, 375, 387, 597, 645, 675, 995, 1075, 1125, 1161, 1791, 1935, 2985, 3225, 3375, 4975, 5373, 5375, 5805, 8557, 8955, 9675, 14925, 16125, 24875, 25671, 26865, 29025, 42785, 44775, 48375, 74625, 77013, 128355, 134325, 145125, 213925, 223875, 231039, 385065, 641775, 671625, 1069625, 1155195, 1925325, 3208875, 5775975, 9626625, 28879875]

約数ペア:

[(1, 28879875), (3, 9626625), (5, 5775975), (9, 3208875), (15, 1925325), (25, 1155195), (27, 1069625), (43, 671625), (45, 641775), (75, 385065), (125, 231039), (129, 223875), (135, 213925), (199, 145125), (215, 134325), (225, 128355), (375, 77013), (387, 74625), (597, 48375), (645, 44775), (675, 42785), (995, 29025), (1075, 26865), (1125, 25671), (1161, 24875), (1791, 16125), (1935, 14925), (2985, 9675), (3225, 8955), (3375, 8557), (4975, 5805), (5373, 5375)]