280018180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{3463}}^1$

素因数の和:3796

約数の個数: 48

約数和(自身を含む): 635491584

約数和(自身を除く): 355473404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1244, 1555, 3110, 3463, 4043, 6220, 6926, 8086, 13852, 16172, 17315, 20215, 34630, 40430, 45019, 69260, 80860, 90038, 180076, 225095, 450190, 900380, 1076993, 2153986, 4307972, 5384965, 10769930, 14000909, 21539860, 28001818, 56003636, 70004545, 140009090, 280018180]

約数ペア:

[(1, 280018180), (2, 140009090), (4, 70004545), (5, 56003636), (10, 28001818), (13, 21539860), (20, 14000909), (26, 10769930), (52, 5384965), (65, 4307972), (130, 2153986), (260, 1076993), (311, 900380), (622, 450190), (1244, 225095), (1555, 180076), (3110, 90038), (3463, 80860), (4043, 69260), (6220, 45019), (6926, 40430), (8086, 34630), (13852, 20215), (16172, 17315)]