81505120

素因数分解:

$2^5\times 5^1\times {\mathrm{659}}^1\times {\mathrm{773}}^1$

素因数の和:1447

約数の個数: 48

約数和(自身を含む): 193097520

約数和(自身を除く): 111592400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 659, 773, 1318, 1546, 2636, 3092, 3295, 3865, 5272, 6184, 6590, 7730, 10544, 12368, 13180, 15460, 21088, 24736, 26360, 30920, 52720, 61840, 105440, 123680, 509407, 1018814, 2037628, 2547035, 4075256, 5094070, 8150512, 10188140, 16301024, 20376280, 40752560, 81505120]

約数ペア:

[(1, 81505120), (2, 40752560), (4, 20376280), (5, 16301024), (8, 10188140), (10, 8150512), (16, 5094070), (20, 4075256), (32, 2547035), (40, 2037628), (80, 1018814), (160, 509407), (659, 123680), (773, 105440), (1318, 61840), (1546, 52720), (2636, 30920), (3092, 26360), (3295, 24736), (3865, 21088), (5272, 15460), (6184, 13180), (6590, 12368), (7730, 10544)]