20680738

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:762

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 15244382

約数列:

[1, 2, 13, 17, 26, 34, 71, 142, 221, 442, 659, 923, 1207, 1318, 1846, 2414, 8567, 11203, 15691, 17134, 22406, 31382, 46789, 93578, 145639, 291278, 608257, 795413, 1216514, 1590826, 10340369, 20680738]

約数ペア:

[(1, 20680738), (2, 10340369), (13, 1590826), (17, 1216514), (26, 795413), (34, 608257), (71, 291278), (142, 145639), (221, 93578), (442, 46789), (659, 31382), (923, 22406), (1207, 17134), (1318, 15691), (1846, 11203), (2414, 8567)]