81857685

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{659}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 165227040

約数和(自身を除く): 83369355

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 169, 195, 245, 273, 455, 507, 637, 659, 735, 845, 1183, 1365, 1911, 1977, 2535, 3185, 3295, 3549, 4613, 5915, 8281, 8567, 9555, 9885, 13839, 17745, 23065, 24843, 25701, 32291, 41405, 42835, 59969, 69195, 96873, 111371, 124215, 128505, 161455, 179907, 299845, 334113, 419783, 484365, 556855, 779597, 899535, 1259349, 1670565, 2098915, 2338791, 3897985, 5457179, 6296745, 11693955, 16371537, 27285895, 81857685]

約数ペア:

[(1, 81857685), (3, 27285895), (5, 16371537), (7, 11693955), (13, 6296745), (15, 5457179), (21, 3897985), (35, 2338791), (39, 2098915), (49, 1670565), (65, 1259349), (91, 899535), (105, 779597), (147, 556855), (169, 484365), (195, 419783), (245, 334113), (273, 299845), (455, 179907), (507, 161455), (637, 128505), (659, 124215), (735, 111371), (845, 96873), (1183, 69195), (1365, 59969), (1911, 42835), (1977, 41405), (2535, 32291), (3185, 25701), (3295, 24843), (3549, 23065), (4613, 17745), (5915, 13839), (8281, 9885), (8567, 9555)]