210902140

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{797}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 451259424

約数和(自身を除く): 240357284

約数列:

[1, 2, 4, 5, 10, 20, 101, 131, 202, 262, 404, 505, 524, 655, 797, 1010, 1310, 1594, 2020, 2620, 3188, 3985, 7970, 13231, 15940, 26462, 52924, 66155, 80497, 104407, 132310, 160994, 208814, 264620, 321988, 402485, 417628, 522035, 804970, 1044070, 1609940, 2088140, 10545107, 21090214, 42180428, 52725535, 105451070, 210902140]

約数ペア:

[(1, 210902140), (2, 105451070), (4, 52725535), (5, 42180428), (10, 21090214), (20, 10545107), (101, 2088140), (131, 1609940), (202, 1044070), (262, 804970), (404, 522035), (505, 417628), (524, 402485), (655, 321988), (797, 264620), (1010, 208814), (1310, 160994), (1594, 132310), (2020, 104407), (2620, 80497), (3188, 66155), (3985, 52924), (7970, 26462), (13231, 15940)]