399852880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{743}}^1$

素因数の和:825

約数の個数: 120

約数和(自身を含む): 1099322496

約数和(自身を除く): 699469616

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, 743, 868, 961, 1085, 1240, 1486, 1736, 1922, 2170, 2480, 2972, 3472, 3715, 3844, 4340, 4805, 5201, 5944, 6727, 7430, 7688, 8680, 9610, 10402, 11888, 13454, 14860, 15376, 17360, 19220, 20804, 23033, 26005, 26908, 29720, 33635, 38440, 41608, 46066, 52010, 53816, 59440, 67270, 76880, 83216, 92132, 104020, 107632, 115165, 134540, 161231, 184264, 208040, 230330, 269080, 322462, 368528, 416080, 460660, 538160, 644924, 714023, 806155, 921320, 1289848, 1428046, 1612310, 1842640, 2579696, 2856092, 3224620, 3570115, 4998161, 5712184, 6449240, 7140230, 9996322, 11424368, 12898480, 14280460, 19992644, 24990805, 28560920, 39985288, 49981610, 57121840, 79970576, 99963220, 199926440, 399852880]

約数ペア:

[(1, 399852880), (2, 199926440), (4, 99963220), (5, 79970576), (7, 57121840), (8, 49981610), (10, 39985288), (14, 28560920), (16, 24990805), (20, 19992644), (28, 14280460), (31, 12898480), (35, 11424368), (40, 9996322), (56, 7140230), (62, 6449240), (70, 5712184), (80, 4998161), (112, 3570115), (124, 3224620), (140, 2856092), (155, 2579696), (217, 1842640), (248, 1612310), (280, 1428046), (310, 1289848), (434, 921320), (496, 806155), (560, 714023), (620, 644924), (743, 538160), (868, 460660), (961, 416080), (1085, 368528), (1240, 322462), (1486, 269080), (1736, 230330), (1922, 208040), (2170, 184264), (2480, 161231), (2972, 134540), (3472, 115165), (3715, 107632), (3844, 104020), (4340, 92132), (4805, 83216), (5201, 76880), (5944, 67270), (6727, 59440), (7430, 53816), (7688, 52010), (8680, 46066), (9610, 41608), (10402, 38440), (11888, 33635), (13454, 29720), (14860, 26908), (15376, 26005), (17360, 23033), (19220, 20804)]