21483280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{227}}^1$

素因数の和:273

約数の個数: 120

約数和(自身を含む): 62085312

約数和(自身を除く): 40602032

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, 227, 260, 280, 338, 364, 454, 455, 520, 560, 676, 728, 845, 908, 910, 1040, 1135, 1183, 1352, 1456, 1589, 1690, 1816, 1820, 2270, 2366, 2704, 2951, 3178, 3380, 3632, 3640, 4540, 4732, 5902, 5915, 6356, 6760, 7280, 7945, 9080, 9464, 11804, 11830, 12712, 13520, 14755, 15890, 18160, 18928, 20657, 23608, 23660, 25424, 29510, 31780, 38363, 41314, 47216, 47320, 59020, 63560, 76726, 82628, 94640, 103285, 118040, 127120, 153452, 165256, 191815, 206570, 236080, 268541, 306904, 330512, 383630, 413140, 537082, 613808, 767260, 826280, 1074164, 1342705, 1534520, 1652560, 2148328, 2685410, 3069040, 4296656, 5370820, 10741640, 21483280]

約数ペア:

[(1, 21483280), (2, 10741640), (4, 5370820), (5, 4296656), (7, 3069040), (8, 2685410), (10, 2148328), (13, 1652560), (14, 1534520), (16, 1342705), (20, 1074164), (26, 826280), (28, 767260), (35, 613808), (40, 537082), (52, 413140), (56, 383630), (65, 330512), (70, 306904), (80, 268541), (91, 236080), (104, 206570), (112, 191815), (130, 165256), (140, 153452), (169, 127120), (182, 118040), (208, 103285), (227, 94640), (260, 82628), (280, 76726), (338, 63560), (364, 59020), (454, 47320), (455, 47216), (520, 41314), (560, 38363), (676, 31780), (728, 29510), (845, 25424), (908, 23660), (910, 23608), (1040, 20657), (1135, 18928), (1183, 18160), (1352, 15890), (1456, 14755), (1589, 13520), (1690, 12712), (1816, 11830), (1820, 11804), (2270, 9464), (2366, 9080), (2704, 7945), (2951, 7280), (3178, 6760), (3380, 6356), (3632, 5915), (3640, 5902), (4540, 4732)]