255208380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31981}}^1$

素因数の和:32019

約数の個数: 96

約数和(自身を含む): 859676160

約数和(自身を除く): 604467780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 3990, 7980, 31981, 63962, 95943, 127924, 159905, 191886, 223867, 319810, 383772, 447734, 479715, 607639, 639620, 671601, 895468, 959430, 1119335, 1215278, 1343202, 1822917, 1918860, 2238670, 2430556, 2686404, 3038195, 3358005, 3645834, 4253473, 4477340, 6076390, 6716010, 7291668, 8506946, 9114585, 12152780, 12760419, 13432020, 17013892, 18229170, 21267365, 25520838, 36458340, 42534730, 51041676, 63802095, 85069460, 127604190, 255208380]

約数ペア:

[(1, 255208380), (2, 127604190), (3, 85069460), (4, 63802095), (5, 51041676), (6, 42534730), (7, 36458340), (10, 25520838), (12, 21267365), (14, 18229170), (15, 17013892), (19, 13432020), (20, 12760419), (21, 12152780), (28, 9114585), (30, 8506946), (35, 7291668), (38, 6716010), (42, 6076390), (57, 4477340), (60, 4253473), (70, 3645834), (76, 3358005), (84, 3038195), (95, 2686404), (105, 2430556), (114, 2238670), (133, 1918860), (140, 1822917), (190, 1343202), (210, 1215278), (228, 1119335), (266, 959430), (285, 895468), (380, 671601), (399, 639620), (420, 607639), (532, 479715), (570, 447734), (665, 383772), (798, 319810), (1140, 223867), (1330, 191886), (1596, 159905), (1995, 127924), (2660, 95943), (3990, 63962), (7980, 31981)]