19804970

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2203}}^1$

素因数の和:2270

約数の個数: 32

約数和(自身を含む): 38085120

約数和(自身を除く): 18280150

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 145, 155, 290, 310, 899, 1798, 2203, 4406, 4495, 8990, 11015, 22030, 63887, 68293, 127774, 136586, 319435, 341465, 638870, 682930, 1980497, 3960994, 9902485, 19804970]

約数ペア:

[(1, 19804970), (2, 9902485), (5, 3960994), (10, 1980497), (29, 682930), (31, 638870), (58, 341465), (62, 319435), (145, 136586), (155, 127774), (290, 68293), (310, 63887), (899, 22030), (1798, 11015), (2203, 8990), (4406, 4495)]