20077980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25741}}^1$

素因数の和:25766

約数の個数: 48

約数和(自身を含む): 60545184

約数和(自身を除く): 40467204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25741, 51482, 77223, 102964, 128705, 154446, 257410, 308892, 334633, 386115, 514820, 669266, 772230, 1003899, 1338532, 1544460, 1673165, 2007798, 3346330, 4015596, 5019495, 6692660, 10038990, 20077980]

約数ペア:

[(1, 20077980), (2, 10038990), (3, 6692660), (4, 5019495), (5, 4015596), (6, 3346330), (10, 2007798), (12, 1673165), (13, 1544460), (15, 1338532), (20, 1003899), (26, 772230), (30, 669266), (39, 514820), (52, 386115), (60, 334633), (65, 308892), (78, 257410), (130, 154446), (156, 128705), (195, 102964), (260, 77223), (390, 51482), (780, 25741)]