77899280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:456

約数の個数: 80

約数和(自身を含む): 189416448

約数和(自身を除く): 111517168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 311, 404, 496, 505, 620, 622, 808, 1010, 1240, 1244, 1555, 1616, 2020, 2480, 2488, 3110, 3131, 4040, 4976, 6220, 6262, 8080, 9641, 12440, 12524, 15655, 19282, 24880, 25048, 31310, 31411, 38564, 48205, 50096, 62620, 62822, 77128, 96410, 125240, 125644, 154256, 157055, 192820, 250480, 251288, 314110, 385640, 502576, 628220, 771280, 973741, 1256440, 1947482, 2512880, 3894964, 4868705, 7789928, 9737410, 15579856, 19474820, 38949640, 77899280]

約数ペア:

[(1, 77899280), (2, 38949640), (4, 19474820), (5, 15579856), (8, 9737410), (10, 7789928), (16, 4868705), (20, 3894964), (31, 2512880), (40, 1947482), (62, 1256440), (80, 973741), (101, 771280), (124, 628220), (155, 502576), (202, 385640), (248, 314110), (310, 251288), (311, 250480), (404, 192820), (496, 157055), (505, 154256), (620, 125644), (622, 125240), (808, 96410), (1010, 77128), (1240, 62822), (1244, 62620), (1555, 50096), (1616, 48205), (2020, 38564), (2480, 31411), (2488, 31310), (3110, 25048), (3131, 24880), (4040, 19282), (4976, 15655), (6220, 12524), (6262, 12440), (8080, 9641)]