28668780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{373}}^1$

素因数の和:456

約数の個数: 144

約数和(自身を含む): 101285184

約数和(自身を除く): 72616404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 305, 315, 366, 373, 420, 427, 549, 610, 630, 732, 746, 854, 915, 1098, 1119, 1220, 1260, 1281, 1492, 1708, 1830, 1865, 2135, 2196, 2238, 2562, 2611, 2745, 3357, 3660, 3730, 3843, 4270, 4476, 5124, 5222, 5490, 5595, 6405, 6714, 7460, 7686, 7833, 8540, 10444, 10980, 11190, 12810, 13055, 13428, 15372, 15666, 16785, 19215, 22380, 22753, 23499, 25620, 26110, 31332, 33570, 38430, 39165, 45506, 46998, 52220, 67140, 68259, 76860, 78330, 91012, 93996, 113765, 117495, 136518, 156660, 159271, 204777, 227530, 234990, 273036, 318542, 341295, 409554, 455060, 469980, 477813, 637084, 682590, 796355, 819108, 955626, 1023885, 1365180, 1433439, 1592710, 1911252, 2047770, 2389065, 2866878, 3185420, 4095540, 4778130, 5733756, 7167195, 9556260, 14334390, 28668780]

約数ペア:

[(1, 28668780), (2, 14334390), (3, 9556260), (4, 7167195), (5, 5733756), (6, 4778130), (7, 4095540), (9, 3185420), (10, 2866878), (12, 2389065), (14, 2047770), (15, 1911252), (18, 1592710), (20, 1433439), (21, 1365180), (28, 1023885), (30, 955626), (35, 819108), (36, 796355), (42, 682590), (45, 637084), (60, 477813), (61, 469980), (63, 455060), (70, 409554), (84, 341295), (90, 318542), (105, 273036), (122, 234990), (126, 227530), (140, 204777), (180, 159271), (183, 156660), (210, 136518), (244, 117495), (252, 113765), (305, 93996), (315, 91012), (366, 78330), (373, 76860), (420, 68259), (427, 67140), (549, 52220), (610, 46998), (630, 45506), (732, 39165), (746, 38430), (854, 33570), (915, 31332), (1098, 26110), (1119, 25620), (1220, 23499), (1260, 22753), (1281, 22380), (1492, 19215), (1708, 16785), (1830, 15666), (1865, 15372), (2135, 13428), (2196, 13055), (2238, 12810), (2562, 11190), (2611, 10980), (2745, 10444), (3357, 8540), (3660, 7833), (3730, 7686), (3843, 7460), (4270, 6714), (4476, 6405), (5124, 5595), (5222, 5490)]