278399988

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{4447}}^1$

素因数の和:4541

約数の個数: 72

約数和(自身を含む): 738296832

約数和(自身を除く): 459896844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 47, 74, 94, 111, 141, 148, 188, 222, 282, 333, 423, 444, 564, 666, 846, 1332, 1692, 1739, 3478, 4447, 5217, 6956, 8894, 10434, 13341, 15651, 17788, 20868, 26682, 31302, 40023, 53364, 62604, 80046, 160092, 164539, 209009, 329078, 418018, 493617, 627027, 658156, 836036, 987234, 1254054, 1480851, 1881081, 1974468, 2508108, 2961702, 3762162, 5923404, 7524324, 7733333, 15466666, 23199999, 30933332, 46399998, 69599997, 92799996, 139199994, 278399988]

約数ペア:

[(1, 278399988), (2, 139199994), (3, 92799996), (4, 69599997), (6, 46399998), (9, 30933332), (12, 23199999), (18, 15466666), (36, 7733333), (37, 7524324), (47, 5923404), (74, 3762162), (94, 2961702), (111, 2508108), (141, 1974468), (148, 1881081), (188, 1480851), (222, 1254054), (282, 987234), (333, 836036), (423, 658156), (444, 627027), (564, 493617), (666, 418018), (846, 329078), (1332, 209009), (1692, 164539), (1739, 160092), (3478, 80046), (4447, 62604), (5217, 53364), (6956, 40023), (8894, 31302), (10434, 26682), (13341, 20868), (15651, 17788)]