20726672

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 42856632

約数和(自身を除く): 22129960

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 181, 272, 362, 421, 724, 842, 1448, 1684, 2896, 3077, 3368, 6154, 6736, 7157, 12308, 14314, 24616, 28628, 49232, 57256, 76201, 114512, 152402, 304804, 609608, 1219216, 1295417, 2590834, 5181668, 10363336, 20726672]

約数ペア:

[(1, 20726672), (2, 10363336), (4, 5181668), (8, 2590834), (16, 1295417), (17, 1219216), (34, 609608), (68, 304804), (136, 152402), (181, 114512), (272, 76201), (362, 57256), (421, 49232), (724, 28628), (842, 24616), (1448, 14314), (1684, 12308), (2896, 7157), (3077, 6736), (3368, 6154)]