21400120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3323}}^1$

素因数の和:3364

約数の個数: 64

約数和(自身を含む): 57438720

約数和(自身を除く): 36038600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 3323, 6440, 6646, 13292, 16615, 23261, 26584, 33230, 46522, 66460, 76429, 93044, 116305, 132920, 152858, 186088, 232610, 305716, 382145, 465220, 535003, 611432, 764290, 930440, 1070006, 1528580, 2140012, 2675015, 3057160, 4280024, 5350030, 10700060, 21400120]

約数ペア:

[(1, 21400120), (2, 10700060), (4, 5350030), (5, 4280024), (7, 3057160), (8, 2675015), (10, 2140012), (14, 1528580), (20, 1070006), (23, 930440), (28, 764290), (35, 611432), (40, 535003), (46, 465220), (56, 382145), (70, 305716), (92, 232610), (115, 186088), (140, 152858), (161, 132920), (184, 116305), (230, 93044), (280, 76429), (322, 66460), (460, 46522), (644, 33230), (805, 26584), (920, 23261), (1288, 16615), (1610, 13292), (3220, 6646), (3323, 6440)]