9771020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1070

約数の個数: 48

約数和(自身を含む): 23804928

約数和(自身を除く): 14033908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 983, 994, 1420, 1966, 1988, 2485, 3932, 4915, 4970, 6881, 9830, 9940, 13762, 19660, 27524, 34405, 68810, 69793, 137620, 139586, 279172, 348965, 488551, 697930, 977102, 1395860, 1954204, 2442755, 4885510, 9771020]

約数ペア:

[(1, 9771020), (2, 4885510), (4, 2442755), (5, 1954204), (7, 1395860), (10, 977102), (14, 697930), (20, 488551), (28, 348965), (35, 279172), (70, 139586), (71, 137620), (140, 69793), (142, 68810), (284, 34405), (355, 27524), (497, 19660), (710, 13762), (983, 9940), (994, 9830), (1420, 6881), (1966, 4970), (1988, 4915), (2485, 3932)]