81090045

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 150585600

約数和(自身を除く): 69495555

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 61, 129, 135, 183, 215, 229, 305, 387, 549, 645, 687, 915, 1145, 1161, 1647, 1935, 2061, 2623, 2745, 3435, 5805, 6183, 7869, 8235, 9847, 10305, 13115, 13969, 23607, 29541, 30915, 39345, 41907, 49235, 69845, 70821, 88623, 118035, 125721, 147705, 209535, 265869, 354105, 377163, 443115, 600667, 628605, 1329345, 1802001, 1885815, 3003335, 5406003, 9010005, 16218009, 27030015, 81090045]

約数ペア:

[(1, 81090045), (3, 27030015), (5, 16218009), (9, 9010005), (15, 5406003), (27, 3003335), (43, 1885815), (45, 1802001), (61, 1329345), (129, 628605), (135, 600667), (183, 443115), (215, 377163), (229, 354105), (305, 265869), (387, 209535), (549, 147705), (645, 125721), (687, 118035), (915, 88623), (1145, 70821), (1161, 69845), (1647, 49235), (1935, 41907), (2061, 39345), (2623, 30915), (2745, 29541), (3435, 23607), (5805, 13969), (6183, 13115), (7869, 10305), (8235, 9847)]