81845998

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{571}}^1$

素因数の和:772

約数の個数: 32

約数和(自身を含む): 136936800

約数和(自身を除く): 55090802

約数列:

[1, 2, 13, 26, 37, 74, 149, 298, 481, 571, 962, 1142, 1937, 3874, 5513, 7423, 11026, 14846, 21127, 42254, 71669, 85079, 143338, 170158, 274651, 549302, 1106027, 2212054, 3147923, 6295846, 40922999, 81845998]

約数ペア:

[(1, 81845998), (2, 40922999), (13, 6295846), (26, 3147923), (37, 2212054), (74, 1106027), (149, 549302), (298, 274651), (481, 170158), (571, 143338), (962, 85079), (1142, 71669), (1937, 42254), (3874, 21127), (5513, 14846), (7423, 11026)]