25881280

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2609}}^1$

素因数の和:2657

約数の個数: 56

約数和(自身を含む): 63642240

約数和(自身を除く): 37760960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 2609, 4960, 5218, 9920, 10436, 13045, 20872, 26090, 41744, 52180, 80879, 83488, 104360, 161758, 166976, 208720, 323516, 404395, 417440, 647032, 808790, 834880, 1294064, 1617580, 2588128, 3235160, 5176256, 6470320, 12940640, 25881280]

約数ペア:

[(1, 25881280), (2, 12940640), (4, 6470320), (5, 5176256), (8, 3235160), (10, 2588128), (16, 1617580), (20, 1294064), (31, 834880), (32, 808790), (40, 647032), (62, 417440), (64, 404395), (80, 323516), (124, 208720), (155, 166976), (160, 161758), (248, 104360), (310, 83488), (320, 80879), (496, 52180), (620, 41744), (992, 26090), (1240, 20872), (1984, 13045), (2480, 10436), (2609, 9920), (4960, 5218)]