21530460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51263}}^1$

素因数の和:51282

約数の個数: 48

約数和(自身を含む): 68898816

約数和(自身を除く): 47368356

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, 51263, 102526, 153789, 205052, 256315, 307578, 358841, 512630, 615156, 717682, 768945, 1025260, 1076523, 1435364, 1537890, 1794205, 2153046, 3075780, 3588410, 4306092, 5382615, 7176820, 10765230, 21530460]

約数ペア:

[(1, 21530460), (2, 10765230), (3, 7176820), (4, 5382615), (5, 4306092), (6, 3588410), (7, 3075780), (10, 2153046), (12, 1794205), (14, 1537890), (15, 1435364), (20, 1076523), (21, 1025260), (28, 768945), (30, 717682), (35, 615156), (42, 512630), (60, 358841), (70, 307578), (84, 256315), (105, 205052), (140, 153789), (210, 102526), (420, 51263)]