81716490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:412

約数の個数: 96

約数和(自身を含む): 222393600

約数和(自身を除く): 140677110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 87, 90, 131, 145, 174, 239, 261, 262, 290, 393, 435, 478, 522, 655, 717, 786, 870, 1179, 1195, 1305, 1310, 1434, 1965, 2151, 2358, 2390, 2610, 3585, 3799, 3930, 4302, 5895, 6931, 7170, 7598, 10755, 11397, 11790, 13862, 18995, 20793, 21510, 22794, 31309, 34191, 34655, 37990, 41586, 56985, 62379, 62618, 68382, 69310, 93927, 103965, 113970, 124758, 156545, 170955, 187854, 207930, 281781, 311895, 313090, 341910, 469635, 563562, 623790, 907961, 939270, 1408905, 1815922, 2723883, 2817810, 4539805, 5447766, 8171649, 9079610, 13619415, 16343298, 27238830, 40858245, 81716490]

約数ペア:

[(1, 81716490), (2, 40858245), (3, 27238830), (5, 16343298), (6, 13619415), (9, 9079610), (10, 8171649), (15, 5447766), (18, 4539805), (29, 2817810), (30, 2723883), (45, 1815922), (58, 1408905), (87, 939270), (90, 907961), (131, 623790), (145, 563562), (174, 469635), (239, 341910), (261, 313090), (262, 311895), (290, 281781), (393, 207930), (435, 187854), (478, 170955), (522, 156545), (655, 124758), (717, 113970), (786, 103965), (870, 93927), (1179, 69310), (1195, 68382), (1305, 62618), (1310, 62379), (1434, 56985), (1965, 41586), (2151, 37990), (2358, 34655), (2390, 34191), (2610, 31309), (3585, 22794), (3799, 21510), (3930, 20793), (4302, 18995), (5895, 13862), (6931, 11790), (7170, 11397), (7598, 10755)]