78428520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{719}}^1$

素因数の和:840

約数の個数: 128

約数和(自身を含む): 264384000

約数和(自身を除く): 185955480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 101, 108, 120, 135, 180, 202, 216, 270, 303, 360, 404, 505, 540, 606, 719, 808, 909, 1010, 1080, 1212, 1438, 1515, 1818, 2020, 2157, 2424, 2727, 2876, 3030, 3595, 3636, 4040, 4314, 4545, 5454, 5752, 6060, 6471, 7190, 7272, 8628, 9090, 10785, 10908, 12120, 12942, 13635, 14380, 17256, 18180, 19413, 21570, 21816, 25884, 27270, 28760, 32355, 36360, 38826, 43140, 51768, 54540, 64710, 72619, 77652, 86280, 97065, 109080, 129420, 145238, 155304, 194130, 217857, 258840, 290476, 363095, 388260, 435714, 580952, 653571, 726190, 776520, 871428, 1089285, 1307142, 1452380, 1742856, 1960713, 2178570, 2614284, 2904760, 3267855, 3921426, 4357140, 5228568, 6535710, 7842852, 8714280, 9803565, 13071420, 15685704, 19607130, 26142840, 39214260, 78428520]

約数ペア:

[(1, 78428520), (2, 39214260), (3, 26142840), (4, 19607130), (5, 15685704), (6, 13071420), (8, 9803565), (9, 8714280), (10, 7842852), (12, 6535710), (15, 5228568), (18, 4357140), (20, 3921426), (24, 3267855), (27, 2904760), (30, 2614284), (36, 2178570), (40, 1960713), (45, 1742856), (54, 1452380), (60, 1307142), (72, 1089285), (90, 871428), (101, 776520), (108, 726190), (120, 653571), (135, 580952), (180, 435714), (202, 388260), (216, 363095), (270, 290476), (303, 258840), (360, 217857), (404, 194130), (505, 155304), (540, 145238), (606, 129420), (719, 109080), (808, 97065), (909, 86280), (1010, 77652), (1080, 72619), (1212, 64710), (1438, 54540), (1515, 51768), (1818, 43140), (2020, 38826), (2157, 36360), (2424, 32355), (2727, 28760), (2876, 27270), (3030, 25884), (3595, 21816), (3636, 21570), (4040, 19413), (4314, 18180), (4545, 17256), (5454, 14380), (5752, 13635), (6060, 12942), (6471, 12120), (7190, 10908), (7272, 10785), (8628, 9090)]