26880420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:290

約数の個数: 144

約数和(自身を含む): 90091008

約数和(自身を除く): 63210588

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 49, 60, 70, 82, 84, 98, 105, 123, 140, 147, 164, 196, 205, 210, 223, 245, 246, 287, 294, 410, 420, 446, 490, 492, 574, 588, 615, 669, 735, 820, 861, 892, 980, 1115, 1148, 1230, 1338, 1435, 1470, 1561, 1722, 2009, 2230, 2460, 2676, 2870, 2940, 3122, 3345, 3444, 4018, 4305, 4460, 4683, 5740, 6027, 6244, 6690, 7805, 8036, 8610, 9143, 9366, 10045, 10927, 12054, 13380, 15610, 17220, 18286, 18732, 20090, 21854, 23415, 24108, 27429, 30135, 31220, 32781, 36572, 40180, 43708, 45715, 46830, 54635, 54858, 60270, 64001, 65562, 91430, 93660, 109270, 109716, 120540, 128002, 131124, 137145, 163905, 182860, 192003, 218540, 256004, 274290, 320005, 327810, 384006, 448007, 548580, 640010, 655620, 768012, 896014, 960015, 1280020, 1344021, 1792028, 1920030, 2240035, 2688042, 3840060, 4480070, 5376084, 6720105, 8960140, 13440210, 26880420]

約数ペア:

[(1, 26880420), (2, 13440210), (3, 8960140), (4, 6720105), (5, 5376084), (6, 4480070), (7, 3840060), (10, 2688042), (12, 2240035), (14, 1920030), (15, 1792028), (20, 1344021), (21, 1280020), (28, 960015), (30, 896014), (35, 768012), (41, 655620), (42, 640010), (49, 548580), (60, 448007), (70, 384006), (82, 327810), (84, 320005), (98, 274290), (105, 256004), (123, 218540), (140, 192003), (147, 182860), (164, 163905), (196, 137145), (205, 131124), (210, 128002), (223, 120540), (245, 109716), (246, 109270), (287, 93660), (294, 91430), (410, 65562), (420, 64001), (446, 60270), (490, 54858), (492, 54635), (574, 46830), (588, 45715), (615, 43708), (669, 40180), (735, 36572), (820, 32781), (861, 31220), (892, 30135), (980, 27429), (1115, 24108), (1148, 23415), (1230, 21854), (1338, 20090), (1435, 18732), (1470, 18286), (1561, 17220), (1722, 15610), (2009, 13380), (2230, 12054), (2460, 10927), (2676, 10045), (2870, 9366), (2940, 9143), (3122, 8610), (3345, 8036), (3444, 7805), (4018, 6690), (4305, 6244), (4460, 6027), (4683, 5740)]