162780020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{16921}}^1$

素因数の和:16980

約数の個数: 48

約数和(自身を含む): 378105168

約数和(自身を除く): 215325148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2405, 4810, 9620, 16921, 33842, 67684, 84605, 169210, 219973, 338420, 439946, 626077, 879892, 1099865, 1252154, 2199730, 2504308, 3130385, 4399460, 6260770, 8139001, 12521540, 16278002, 32556004, 40695005, 81390010, 162780020]

約数ペア:

[(1, 162780020), (2, 81390010), (4, 40695005), (5, 32556004), (10, 16278002), (13, 12521540), (20, 8139001), (26, 6260770), (37, 4399460), (52, 3130385), (65, 2504308), (74, 2199730), (130, 1252154), (148, 1099865), (185, 879892), (260, 626077), (370, 439946), (481, 338420), (740, 219973), (962, 169210), (1924, 84605), (2405, 67684), (4810, 33842), (9620, 16921)]