20778544

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 41582160

約数和(自身を除く): 20803616

約数列:

[1, 2, 4, 8, 16, 53, 106, 107, 212, 214, 229, 424, 428, 458, 848, 856, 916, 1712, 1832, 3664, 5671, 11342, 12137, 22684, 24274, 24503, 45368, 48548, 49006, 90736, 97096, 98012, 194192, 196024, 392048, 1298659, 2597318, 5194636, 10389272, 20778544]

約数ペア:

[(1, 20778544), (2, 10389272), (4, 5194636), (8, 2597318), (16, 1298659), (53, 392048), (106, 196024), (107, 194192), (212, 98012), (214, 97096), (229, 90736), (424, 49006), (428, 48548), (458, 45368), (848, 24503), (856, 24274), (916, 22684), (1712, 12137), (1832, 11342), (3664, 5671)]