21474320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1288

約数の個数: 80

約数和(自身を含む): 58948608

約数和(自身を除く): 37474288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1237, 1240, 1736, 2170, 2474, 2480, 3472, 4340, 4948, 6185, 8659, 8680, 9896, 12370, 17318, 17360, 19792, 24740, 34636, 38347, 43295, 49480, 69272, 76694, 86590, 98960, 138544, 153388, 173180, 191735, 268429, 306776, 346360, 383470, 536858, 613552, 692720, 766940, 1073716, 1342145, 1533880, 2147432, 2684290, 3067760, 4294864, 5368580, 10737160, 21474320]

約数ペア:

[(1, 21474320), (2, 10737160), (4, 5368580), (5, 4294864), (7, 3067760), (8, 2684290), (10, 2147432), (14, 1533880), (16, 1342145), (20, 1073716), (28, 766940), (31, 692720), (35, 613552), (40, 536858), (56, 383470), (62, 346360), (70, 306776), (80, 268429), (112, 191735), (124, 173180), (140, 153388), (155, 138544), (217, 98960), (248, 86590), (280, 76694), (310, 69272), (434, 49480), (496, 43295), (560, 38347), (620, 34636), (868, 24740), (1085, 19792), (1237, 17360), (1240, 17318), (1736, 12370), (2170, 9896), (2474, 8680), (2480, 8659), (3472, 6185), (4340, 4948)]