20120520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1409}}^1$

素因数の和:1447

約数の個数: 128

約数和(自身を含む): 73094400

約数和(自身を除く): 52973880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1409, 1428, 1785, 2040, 2380, 2818, 2856, 3570, 4227, 4760, 5636, 7045, 7140, 8454, 9863, 11272, 14090, 14280, 16908, 19726, 21135, 23953, 28180, 29589, 33816, 39452, 42270, 47906, 49315, 56360, 59178, 71859, 78904, 84540, 95812, 98630, 118356, 119765, 143718, 147945, 167671, 169080, 191624, 197260, 236712, 239530, 287436, 295890, 335342, 359295, 394520, 479060, 503013, 574872, 591780, 670684, 718590, 838355, 958120, 1006026, 1183560, 1341368, 1437180, 1676710, 2012052, 2515065, 2874360, 3353420, 4024104, 5030130, 6706840, 10060260, 20120520]

約数ペア:

[(1, 20120520), (2, 10060260), (3, 6706840), (4, 5030130), (5, 4024104), (6, 3353420), (7, 2874360), (8, 2515065), (10, 2012052), (12, 1676710), (14, 1437180), (15, 1341368), (17, 1183560), (20, 1006026), (21, 958120), (24, 838355), (28, 718590), (30, 670684), (34, 591780), (35, 574872), (40, 503013), (42, 479060), (51, 394520), (56, 359295), (60, 335342), (68, 295890), (70, 287436), (84, 239530), (85, 236712), (102, 197260), (105, 191624), (119, 169080), (120, 167671), (136, 147945), (140, 143718), (168, 119765), (170, 118356), (204, 98630), (210, 95812), (238, 84540), (255, 78904), (280, 71859), (340, 59178), (357, 56360), (408, 49315), (420, 47906), (476, 42270), (510, 39452), (595, 33816), (680, 29589), (714, 28180), (840, 23953), (952, 21135), (1020, 19726), (1190, 16908), (1409, 14280), (1428, 14090), (1785, 11272), (2040, 9863), (2380, 8454), (2818, 7140), (2856, 7045), (3570, 5636), (4227, 4760)]