18778880

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{863}}^1$

素因数の和:901

約数の個数: 72

約数和(自身を含む): 47682432

約数和(自身を除く): 28903552

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 863, 1088, 1280, 1360, 1726, 2176, 2720, 3452, 4315, 4352, 5440, 6904, 8630, 10880, 13808, 14671, 17260, 21760, 27616, 29342, 34520, 55232, 58684, 69040, 73355, 110464, 117368, 138080, 146710, 220928, 234736, 276160, 293420, 469472, 552320, 586840, 938944, 1104640, 1173680, 1877888, 2347360, 3755776, 4694720, 9389440, 18778880]

約数ペア:

[(1, 18778880), (2, 9389440), (4, 4694720), (5, 3755776), (8, 2347360), (10, 1877888), (16, 1173680), (17, 1104640), (20, 938944), (32, 586840), (34, 552320), (40, 469472), (64, 293420), (68, 276160), (80, 234736), (85, 220928), (128, 146710), (136, 138080), (160, 117368), (170, 110464), (256, 73355), (272, 69040), (320, 58684), (340, 55232), (544, 34520), (640, 29342), (680, 27616), (863, 21760), (1088, 17260), (1280, 14671), (1360, 13808), (1726, 10880), (2176, 8630), (2720, 6904), (3452, 5440), (4315, 4352)]