25604720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 64201248

約数和(自身を除く): 38596528

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 67, 68, 80, 85, 134, 136, 170, 268, 272, 281, 335, 340, 536, 562, 670, 680, 1072, 1124, 1139, 1340, 1360, 1405, 2248, 2278, 2680, 2810, 4496, 4556, 4777, 5360, 5620, 5695, 9112, 9554, 11240, 11390, 18224, 18827, 19108, 22480, 22780, 23885, 37654, 38216, 45560, 47770, 75308, 76432, 91120, 94135, 95540, 150616, 188270, 191080, 301232, 320059, 376540, 382160, 640118, 753080, 1280236, 1506160, 1600295, 2560472, 3200590, 5120944, 6401180, 12802360, 25604720]

約数ペア:

[(1, 25604720), (2, 12802360), (4, 6401180), (5, 5120944), (8, 3200590), (10, 2560472), (16, 1600295), (17, 1506160), (20, 1280236), (34, 753080), (40, 640118), (67, 382160), (68, 376540), (80, 320059), (85, 301232), (134, 191080), (136, 188270), (170, 150616), (268, 95540), (272, 94135), (281, 91120), (335, 76432), (340, 75308), (536, 47770), (562, 45560), (670, 38216), (680, 37654), (1072, 23885), (1124, 22780), (1139, 22480), (1340, 19108), (1360, 18827), (1405, 18224), (2248, 11390), (2278, 11240), (2680, 9554), (2810, 9112), (4496, 5695), (4556, 5620), (4777, 5360)]