20919678

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4003}}^1$

素因数の和:4088

約数の個数: 32

約数和(自身を含む): 45741696

約数和(自身を除く): 24822018

約数列:

[1, 2, 3, 6, 13, 26, 39, 67, 78, 134, 201, 402, 871, 1742, 2613, 4003, 5226, 8006, 12009, 24018, 52039, 104078, 156117, 268201, 312234, 536402, 804603, 1609206, 3486613, 6973226, 10459839, 20919678]

約数ペア:

[(1, 20919678), (2, 10459839), (3, 6973226), (6, 3486613), (13, 1609206), (26, 804603), (39, 536402), (67, 312234), (78, 268201), (134, 156117), (201, 104078), (402, 52039), (871, 24018), (1742, 12009), (2613, 8006), (4003, 5226)]