407942780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{739}}^1\times {\mathrm{3943}}^1$

素因数の和:4698

約数の個数: 48

約数和(自身を含む): 980636160

約数和(自身を除く): 572693380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 739, 1478, 2956, 3695, 3943, 5173, 7390, 7886, 10346, 14780, 15772, 19715, 20692, 25865, 27601, 39430, 51730, 55202, 78860, 103460, 110404, 138005, 276010, 552020, 2913877, 5827754, 11655508, 14569385, 20397139, 29138770, 40794278, 58277540, 81588556, 101985695, 203971390, 407942780]

約数ペア:

[(1, 407942780), (2, 203971390), (4, 101985695), (5, 81588556), (7, 58277540), (10, 40794278), (14, 29138770), (20, 20397139), (28, 14569385), (35, 11655508), (70, 5827754), (140, 2913877), (739, 552020), (1478, 276010), (2956, 138005), (3695, 110404), (3943, 103460), (5173, 78860), (7390, 55202), (7886, 51730), (10346, 39430), (14780, 27601), (15772, 25865), (19715, 20692)]