128756460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306563}}^1$

素因数の和:306582

約数の個数: 48

約数和(自身を含む): 412022016

約数和(自身を除く): 283265556

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306563, 613126, 919689, 1226252, 1532815, 1839378, 2145941, 3065630, 3678756, 4291882, 4598445, 6131260, 6437823, 8583764, 9196890, 10729705, 12875646, 18393780, 21459410, 25751292, 32189115, 42918820, 64378230, 128756460]

約数ペア:

[(1, 128756460), (2, 64378230), (3, 42918820), (4, 32189115), (5, 25751292), (6, 21459410), (7, 18393780), (10, 12875646), (12, 10729705), (14, 9196890), (15, 8583764), (20, 6437823), (21, 6131260), (28, 4598445), (30, 4291882), (35, 3678756), (42, 3065630), (60, 2145941), (70, 1839378), (84, 1532815), (105, 1226252), (140, 919689), (210, 613126), (420, 306563)]