123677720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{761}}^1$

素因数の和:1028

約数の個数: 64

約数和(自身を含む): 296265600

約数和(自身を除く): 172587880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 239, 340, 478, 680, 761, 956, 1195, 1522, 1912, 2390, 3044, 3805, 4063, 4780, 6088, 7610, 8126, 9560, 12937, 15220, 16252, 20315, 25874, 30440, 32504, 40630, 51748, 64685, 81260, 103496, 129370, 162520, 181879, 258740, 363758, 517480, 727516, 909395, 1455032, 1818790, 3091943, 3637580, 6183886, 7275160, 12367772, 15459715, 24735544, 30919430, 61838860, 123677720]

約数ペア:

[(1, 123677720), (2, 61838860), (4, 30919430), (5, 24735544), (8, 15459715), (10, 12367772), (17, 7275160), (20, 6183886), (34, 3637580), (40, 3091943), (68, 1818790), (85, 1455032), (136, 909395), (170, 727516), (239, 517480), (340, 363758), (478, 258740), (680, 181879), (761, 162520), (956, 129370), (1195, 103496), (1522, 81260), (1912, 64685), (2390, 51748), (3044, 40630), (3805, 32504), (4063, 30440), (4780, 25874), (6088, 20315), (7610, 16252), (8126, 15220), (9560, 12937)]