81314240

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1171}}^1$

素因数の和:1226

約数の個数: 112

約数和(自身を含む): 228624384

約数和(自身を除く): 147310144

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 868, 992, 1085, 1120, 1171, 1240, 1736, 1984, 2170, 2240, 2342, 2480, 3472, 4340, 4684, 4960, 5855, 6944, 8197, 8680, 9368, 9920, 11710, 13888, 16394, 17360, 18736, 23420, 32788, 34720, 36301, 37472, 40985, 46840, 65576, 69440, 72602, 74944, 81970, 93680, 131152, 145204, 163940, 181505, 187360, 254107, 262304, 290408, 327880, 363010, 374720, 508214, 524608, 580816, 655760, 726020, 1016428, 1161632, 1270535, 1311520, 1452040, 2032856, 2323264, 2541070, 2623040, 2904080, 4065712, 5082140, 5808160, 8131424, 10164280, 11616320, 16262848, 20328560, 40657120, 81314240]

約数ペア:

[(1, 81314240), (2, 40657120), (4, 20328560), (5, 16262848), (7, 11616320), (8, 10164280), (10, 8131424), (14, 5808160), (16, 5082140), (20, 4065712), (28, 2904080), (31, 2623040), (32, 2541070), (35, 2323264), (40, 2032856), (56, 1452040), (62, 1311520), (64, 1270535), (70, 1161632), (80, 1016428), (112, 726020), (124, 655760), (140, 580816), (155, 524608), (160, 508214), (217, 374720), (224, 363010), (248, 327880), (280, 290408), (310, 262304), (320, 254107), (434, 187360), (448, 181505), (496, 163940), (560, 145204), (620, 131152), (868, 93680), (992, 81970), (1085, 74944), (1120, 72602), (1171, 69440), (1240, 65576), (1736, 46840), (1984, 40985), (2170, 37472), (2240, 36301), (2342, 34720), (2480, 32788), (3472, 23420), (4340, 18736), (4684, 17360), (4960, 16394), (5855, 13888), (6944, 11710), (8197, 9920), (8680, 9368)]