156922780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{15787}}^1$

素因数の和:15874

約数の個数: 48

約数和(自身を含む): 381943296

約数和(自身を除く): 225020516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 15787, 31574, 63148, 78935, 110509, 157870, 221018, 315740, 442036, 552545, 1105090, 1120877, 2210180, 2241754, 4483508, 5604385, 7846139, 11208770, 15692278, 22417540, 31384556, 39230695, 78461390, 156922780]

約数ペア:

[(1, 156922780), (2, 78461390), (4, 39230695), (5, 31384556), (7, 22417540), (10, 15692278), (14, 11208770), (20, 7846139), (28, 5604385), (35, 4483508), (70, 2241754), (71, 2210180), (140, 1120877), (142, 1105090), (284, 552545), (355, 442036), (497, 315740), (710, 221018), (994, 157870), (1420, 110509), (1988, 78935), (2485, 63148), (4970, 31574), (9940, 15787)]