28529920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:771

約数の個数: 72

約数和(自身を含む): 70640640

約数和(自身を除く): 42110720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 719, 992, 1240, 1280, 1438, 1984, 2480, 2876, 3595, 3968, 4960, 5752, 7190, 7936, 9920, 11504, 14380, 19840, 22289, 23008, 28760, 39680, 44578, 46016, 57520, 89156, 92032, 111445, 115040, 178312, 184064, 222890, 230080, 356624, 445780, 460160, 713248, 891560, 920320, 1426496, 1783120, 2852992, 3566240, 5705984, 7132480, 14264960, 28529920]

約数ペア:

[(1, 28529920), (2, 14264960), (4, 7132480), (5, 5705984), (8, 3566240), (10, 2852992), (16, 1783120), (20, 1426496), (31, 920320), (32, 891560), (40, 713248), (62, 460160), (64, 445780), (80, 356624), (124, 230080), (128, 222890), (155, 184064), (160, 178312), (248, 115040), (256, 111445), (310, 92032), (320, 89156), (496, 57520), (620, 46016), (640, 44578), (719, 39680), (992, 28760), (1240, 23008), (1280, 22289), (1438, 19840), (1984, 14380), (2480, 11504), (2876, 9920), (3595, 7936), (3968, 7190), (4960, 5752)]