21672560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1$

素因数の和:275

約数の個数: 120

約数和(自身を含む): 62629920

約数和(自身を除く): 40957360

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 169, 182, 208, 229, 260, 280, 338, 364, 455, 458, 520, 560, 676, 728, 845, 910, 916, 1040, 1145, 1183, 1352, 1456, 1603, 1690, 1820, 1832, 2290, 2366, 2704, 2977, 3206, 3380, 3640, 3664, 4580, 4732, 5915, 5954, 6412, 6760, 7280, 8015, 9160, 9464, 11830, 11908, 12824, 13520, 14885, 16030, 18320, 18928, 20839, 23660, 23816, 25648, 29770, 32060, 38701, 41678, 47320, 47632, 59540, 64120, 77402, 83356, 94640, 104195, 119080, 128240, 154804, 166712, 193505, 208390, 238160, 270907, 309608, 333424, 387010, 416780, 541814, 619216, 774020, 833560, 1083628, 1354535, 1548040, 1667120, 2167256, 2709070, 3096080, 4334512, 5418140, 10836280, 21672560]

約数ペア:

[(1, 21672560), (2, 10836280), (4, 5418140), (5, 4334512), (7, 3096080), (8, 2709070), (10, 2167256), (13, 1667120), (14, 1548040), (16, 1354535), (20, 1083628), (26, 833560), (28, 774020), (35, 619216), (40, 541814), (52, 416780), (56, 387010), (65, 333424), (70, 309608), (80, 270907), (91, 238160), (104, 208390), (112, 193505), (130, 166712), (140, 154804), (169, 128240), (182, 119080), (208, 104195), (229, 94640), (260, 83356), (280, 77402), (338, 64120), (364, 59540), (455, 47632), (458, 47320), (520, 41678), (560, 38701), (676, 32060), (728, 29770), (845, 25648), (910, 23816), (916, 23660), (1040, 20839), (1145, 18928), (1183, 18320), (1352, 16030), (1456, 14885), (1603, 13520), (1690, 12824), (1820, 11908), (1832, 11830), (2290, 9464), (2366, 9160), (2704, 8015), (2977, 7280), (3206, 6760), (3380, 6412), (3640, 5954), (3664, 5915), (4580, 4732)]