81900468

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1259}}^1$

素因数の和:1421

約数の個数: 72

約数和(自身を含む): 224733600

約数和(自身を除く): 142833132

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 139, 156, 234, 278, 417, 468, 556, 834, 1251, 1259, 1668, 1807, 2502, 2518, 3614, 3777, 5004, 5036, 5421, 7228, 7554, 10842, 11331, 15108, 16263, 16367, 21684, 22662, 32526, 32734, 45324, 49101, 65052, 65468, 98202, 147303, 175001, 196404, 294606, 350002, 525003, 589212, 700004, 1050006, 1575009, 2100012, 2275013, 3150018, 4550026, 6300036, 6825039, 9100052, 13650078, 20475117, 27300156, 40950234, 81900468]

約数ペア:

[(1, 81900468), (2, 40950234), (3, 27300156), (4, 20475117), (6, 13650078), (9, 9100052), (12, 6825039), (13, 6300036), (18, 4550026), (26, 3150018), (36, 2275013), (39, 2100012), (52, 1575009), (78, 1050006), (117, 700004), (139, 589212), (156, 525003), (234, 350002), (278, 294606), (417, 196404), (468, 175001), (556, 147303), (834, 98202), (1251, 65468), (1259, 65052), (1668, 49101), (1807, 45324), (2502, 32734), (2518, 32526), (3614, 22662), (3777, 21684), (5004, 16367), (5036, 16263), (5421, 15108), (7228, 11331), (7554, 10842)]