21608860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:443

約数の個数: 96

約数和(自身を含む): 57802752

約数和(自身を除く): 36193892

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 383, 403, 434, 455, 620, 766, 806, 868, 910, 1085, 1532, 1612, 1820, 1915, 2015, 2170, 2681, 2821, 3830, 4030, 4340, 4979, 5362, 5642, 7660, 8060, 9958, 10724, 11284, 11873, 13405, 14105, 19916, 23746, 24895, 26810, 28210, 34853, 47492, 49790, 53620, 56420, 59365, 69706, 83111, 99580, 118730, 139412, 154349, 166222, 174265, 237460, 308698, 332444, 348530, 415555, 617396, 697060, 771745, 831110, 1080443, 1543490, 1662220, 2160886, 3086980, 4321772, 5402215, 10804430, 21608860]

約数ペア:

[(1, 21608860), (2, 10804430), (4, 5402215), (5, 4321772), (7, 3086980), (10, 2160886), (13, 1662220), (14, 1543490), (20, 1080443), (26, 831110), (28, 771745), (31, 697060), (35, 617396), (52, 415555), (62, 348530), (65, 332444), (70, 308698), (91, 237460), (124, 174265), (130, 166222), (140, 154349), (155, 139412), (182, 118730), (217, 99580), (260, 83111), (310, 69706), (364, 59365), (383, 56420), (403, 53620), (434, 49790), (455, 47492), (620, 34853), (766, 28210), (806, 26810), (868, 24895), (910, 23746), (1085, 19916), (1532, 14105), (1612, 13405), (1820, 11873), (1915, 11284), (2015, 10724), (2170, 9958), (2681, 8060), (2821, 7660), (3830, 5642), (4030, 5362), (4340, 4979)]