28980180

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 93562560

約数和(自身を除く): 64582380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 67, 81, 89, 90, 108, 134, 135, 162, 178, 180, 201, 243, 267, 268, 270, 324, 335, 356, 402, 405, 445, 486, 534, 540, 603, 670, 801, 804, 810, 890, 972, 1005, 1068, 1206, 1215, 1335, 1340, 1602, 1620, 1780, 1809, 2010, 2403, 2412, 2430, 2670, 3015, 3204, 3618, 4005, 4020, 4806, 4860, 5340, 5427, 5963, 6030, 7209, 7236, 8010, 9045, 9612, 10854, 11926, 12015, 12060, 14418, 16020, 16281, 17889, 18090, 21627, 21708, 23852, 24030, 27135, 28836, 29815, 32562, 35778, 36045, 36180, 43254, 48060, 53667, 54270, 59630, 65124, 71556, 72090, 81405, 86508, 89445, 107334, 108135, 108540, 119260, 144180, 161001, 162810, 178890, 214668, 216270, 268335, 322002, 325620, 357780, 432540, 483003, 536670, 644004, 805005, 966006, 1073340, 1449009, 1610010, 1932012, 2415015, 2898018, 3220020, 4830030, 5796036, 7245045, 9660060, 14490090, 28980180]

約数ペア:

[(1, 28980180), (2, 14490090), (3, 9660060), (4, 7245045), (5, 5796036), (6, 4830030), (9, 3220020), (10, 2898018), (12, 2415015), (15, 1932012), (18, 1610010), (20, 1449009), (27, 1073340), (30, 966006), (36, 805005), (45, 644004), (54, 536670), (60, 483003), (67, 432540), (81, 357780), (89, 325620), (90, 322002), (108, 268335), (134, 216270), (135, 214668), (162, 178890), (178, 162810), (180, 161001), (201, 144180), (243, 119260), (267, 108540), (268, 108135), (270, 107334), (324, 89445), (335, 86508), (356, 81405), (402, 72090), (405, 71556), (445, 65124), (486, 59630), (534, 54270), (540, 53667), (603, 48060), (670, 43254), (801, 36180), (804, 36045), (810, 35778), (890, 32562), (972, 29815), (1005, 28836), (1068, 27135), (1206, 24030), (1215, 23852), (1335, 21708), (1340, 21627), (1602, 18090), (1620, 17889), (1780, 16281), (1809, 16020), (2010, 14418), (2403, 12060), (2412, 12015), (2430, 11926), (2670, 10854), (3015, 9612), (3204, 9045), (3618, 8010), (4005, 7236), (4020, 7209), (4806, 6030), (4860, 5963), (5340, 5427)]