21700280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4079}}^1$

素因数の和:4116

約数の個数: 64

約数和(自身を含む): 58752000

約数和(自身を除く): 37051720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4079, 5320, 8158, 16316, 20395, 28553, 32632, 40790, 57106, 77501, 81580, 114212, 142765, 155002, 163160, 228424, 285530, 310004, 387505, 542507, 571060, 620008, 775010, 1085014, 1142120, 1550020, 2170028, 2712535, 3100040, 4340056, 5425070, 10850140, 21700280]

約数ペア:

[(1, 21700280), (2, 10850140), (4, 5425070), (5, 4340056), (7, 3100040), (8, 2712535), (10, 2170028), (14, 1550020), (19, 1142120), (20, 1085014), (28, 775010), (35, 620008), (38, 571060), (40, 542507), (56, 387505), (70, 310004), (76, 285530), (95, 228424), (133, 163160), (140, 155002), (152, 142765), (190, 114212), (266, 81580), (280, 77501), (380, 57106), (532, 40790), (665, 32632), (760, 28553), (1064, 20395), (1330, 16316), (2660, 8158), (4079, 5320)]