20438640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28387}}^1$

素因数の和:28406

約数の個数: 60

約数和(自身を含む): 68642184

約数和(自身を除く): 48203544

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28387, 56774, 85161, 113548, 141935, 170322, 227096, 255483, 283870, 340644, 425805, 454192, 510966, 567740, 681288, 851610, 1021932, 1135480, 1277415, 1362576, 1703220, 2043864, 2270960, 2554830, 3406440, 4087728, 5109660, 6812880, 10219320, 20438640]

約数ペア:

[(1, 20438640), (2, 10219320), (3, 6812880), (4, 5109660), (5, 4087728), (6, 3406440), (8, 2554830), (9, 2270960), (10, 2043864), (12, 1703220), (15, 1362576), (16, 1277415), (18, 1135480), (20, 1021932), (24, 851610), (30, 681288), (36, 567740), (40, 510966), (45, 454192), (48, 425805), (60, 340644), (72, 283870), (80, 255483), (90, 227096), (120, 170322), (144, 141935), (180, 113548), (240, 85161), (360, 56774), (720, 28387)]