256548390

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{1221659}}^1$

素因数の和:1221676

約数の個数: 32

約数和(自身を含む): 703676160

約数和(自身を除く): 447127770

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 1221659, 2443318, 3664977, 6108295, 7329954, 8551613, 12216590, 17103226, 18324885, 25654839, 36649770, 42758065, 51309678, 85516130, 128274195, 256548390]

約数ペア:

[(1, 256548390), (2, 128274195), (3, 85516130), (5, 51309678), (6, 42758065), (7, 36649770), (10, 25654839), (14, 18324885), (15, 17103226), (21, 12216590), (30, 8551613), (35, 7329954), (42, 6108295), (70, 3664977), (105, 2443318), (210, 1221659)]