20691120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1181}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 65076192

約数和(自身を除く): 44385072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 73, 80, 120, 146, 219, 240, 292, 365, 438, 584, 730, 876, 1095, 1168, 1181, 1460, 1752, 2190, 2362, 2920, 3504, 3543, 4380, 4724, 5840, 5905, 7086, 8760, 9448, 11810, 14172, 17520, 17715, 18896, 23620, 28344, 35430, 47240, 56688, 70860, 86213, 94480, 141720, 172426, 258639, 283440, 344852, 431065, 517278, 689704, 862130, 1034556, 1293195, 1379408, 1724260, 2069112, 2586390, 3448520, 4138224, 5172780, 6897040, 10345560, 20691120]

約数ペア:

[(1, 20691120), (2, 10345560), (3, 6897040), (4, 5172780), (5, 4138224), (6, 3448520), (8, 2586390), (10, 2069112), (12, 1724260), (15, 1379408), (16, 1293195), (20, 1034556), (24, 862130), (30, 689704), (40, 517278), (48, 431065), (60, 344852), (73, 283440), (80, 258639), (120, 172426), (146, 141720), (219, 94480), (240, 86213), (292, 70860), (365, 56688), (438, 47240), (584, 35430), (730, 28344), (876, 23620), (1095, 18896), (1168, 17715), (1181, 17520), (1460, 14172), (1752, 11810), (2190, 9448), (2362, 8760), (2920, 7086), (3504, 5905), (3543, 5840), (4380, 4724)]