261981440

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{4177}}^1$

素因数の和:4212

約数の個数: 108

約数和(自身を含む): 730155636

約数和(自身を除く): 468174196

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 560, 640, 784, 896, 980, 1120, 1280, 1568, 1792, 1960, 2240, 3136, 3920, 4177, 4480, 6272, 7840, 8354, 8960, 12544, 15680, 16708, 20885, 29239, 31360, 33416, 41770, 58478, 62720, 66832, 83540, 116956, 133664, 146195, 167080, 204673, 233912, 267328, 292390, 334160, 409346, 467824, 534656, 584780, 668320, 818692, 935648, 1023365, 1069312, 1169560, 1336640, 1637384, 1871296, 2046730, 2339120, 2673280, 3274768, 3742592, 4093460, 4678240, 5346560, 6549536, 7485184, 8186920, 9356480, 13099072, 16373840, 18712960, 26198144, 32747680, 37425920, 52396288, 65495360, 130990720, 261981440]

約数ペア:

[(1, 261981440), (2, 130990720), (4, 65495360), (5, 52396288), (7, 37425920), (8, 32747680), (10, 26198144), (14, 18712960), (16, 16373840), (20, 13099072), (28, 9356480), (32, 8186920), (35, 7485184), (40, 6549536), (49, 5346560), (56, 4678240), (64, 4093460), (70, 3742592), (80, 3274768), (98, 2673280), (112, 2339120), (128, 2046730), (140, 1871296), (160, 1637384), (196, 1336640), (224, 1169560), (245, 1069312), (256, 1023365), (280, 935648), (320, 818692), (392, 668320), (448, 584780), (490, 534656), (560, 467824), (640, 409346), (784, 334160), (896, 292390), (980, 267328), (1120, 233912), (1280, 204673), (1568, 167080), (1792, 146195), (1960, 133664), (2240, 116956), (3136, 83540), (3920, 66832), (4177, 62720), (4480, 58478), (6272, 41770), (7840, 33416), (8354, 31360), (8960, 29239), (12544, 20885), (15680, 16708)]