81275690

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 158630400

約数和(自身を除く): 77354710

約数列:

[1, 2, 5, 10, 29, 47, 58, 67, 89, 94, 134, 145, 178, 235, 290, 335, 445, 470, 670, 890, 1363, 1943, 2581, 2726, 3149, 3886, 4183, 5162, 5963, 6298, 6815, 8366, 9715, 11926, 12905, 13630, 15745, 19430, 20915, 25810, 29815, 31490, 41830, 59630, 91321, 121307, 172927, 182642, 242614, 280261, 345854, 456605, 560522, 606535, 864635, 913210, 1213070, 1401305, 1729270, 2802610, 8127569, 16255138, 40637845, 81275690]

約数ペア:

[(1, 81275690), (2, 40637845), (5, 16255138), (10, 8127569), (29, 2802610), (47, 1729270), (58, 1401305), (67, 1213070), (89, 913210), (94, 864635), (134, 606535), (145, 560522), (178, 456605), (235, 345854), (290, 280261), (335, 242614), (445, 182642), (470, 172927), (670, 121307), (890, 91321), (1363, 59630), (1943, 41830), (2581, 31490), (2726, 29815), (3149, 25810), (3886, 20915), (4183, 19430), (5162, 15745), (5963, 13630), (6298, 12905), (6815, 11926), (8366, 9715)]