28489140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{971}}^1$

素因数の和:1149

約数の個数: 72

約数和(自身を含む): 87036768

約数和(自身を除く): 58547628

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 815, 971, 978, 1467, 1630, 1942, 1956, 2445, 2913, 2934, 3260, 3884, 4855, 4890, 5826, 5868, 7335, 8739, 9710, 9780, 11652, 14565, 14670, 17478, 19420, 29130, 29340, 34956, 43695, 58260, 87390, 158273, 174780, 316546, 474819, 633092, 791365, 949638, 1424457, 1582730, 1899276, 2374095, 2848914, 3165460, 4748190, 5697828, 7122285, 9496380, 14244570, 28489140]

約数ペア:

[(1, 28489140), (2, 14244570), (3, 9496380), (4, 7122285), (5, 5697828), (6, 4748190), (9, 3165460), (10, 2848914), (12, 2374095), (15, 1899276), (18, 1582730), (20, 1424457), (30, 949638), (36, 791365), (45, 633092), (60, 474819), (90, 316546), (163, 174780), (180, 158273), (326, 87390), (489, 58260), (652, 43695), (815, 34956), (971, 29340), (978, 29130), (1467, 19420), (1630, 17478), (1942, 14670), (1956, 14565), (2445, 11652), (2913, 9780), (2934, 9710), (3260, 8739), (3884, 7335), (4855, 5868), (4890, 5826)]