638562208

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{2689}}^1$

素因数の和:2921

約数の個数: 48

約数和(自身を含む): 1295428680

約数和(自身を除く): 656866472

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 181, 328, 362, 656, 724, 1312, 1448, 2689, 2896, 5378, 5792, 7421, 10756, 14842, 21512, 29684, 43024, 59368, 86048, 110249, 118736, 220498, 237472, 440996, 486709, 881992, 973418, 1763984, 1946836, 3527968, 3893672, 7787344, 15574688, 19955069, 39910138, 79820276, 159640552, 319281104, 638562208]

約数ペア:

[(1, 638562208), (2, 319281104), (4, 159640552), (8, 79820276), (16, 39910138), (32, 19955069), (41, 15574688), (82, 7787344), (164, 3893672), (181, 3527968), (328, 1946836), (362, 1763984), (656, 973418), (724, 881992), (1312, 486709), (1448, 440996), (2689, 237472), (2896, 220498), (5378, 118736), (5792, 110249), (7421, 86048), (10756, 59368), (14842, 43024), (21512, 29684)]