30780460

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1553}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 64745856

約数和(自身を除く): 33965396

約数列:

[1, 2, 4, 5, 10, 20, 991, 1553, 1982, 3106, 3964, 4955, 6212, 7765, 9910, 15530, 19820, 31060, 1539023, 3078046, 6156092, 7695115, 15390230, 30780460]

約数ペア:

[(1, 30780460), (2, 15390230), (4, 7695115), (5, 6156092), (10, 3078046), (20, 1539023), (991, 31060), (1553, 19820), (1982, 15530), (3106, 9910), (3964, 7765), (4955, 6212)]