399961744

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:225

約数の個数: 160

約数和(自身を含む): 998936064

約数和(自身を除く): 598974320

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 53, 56, 71, 73, 91, 104, 106, 112, 142, 146, 182, 208, 212, 284, 292, 364, 371, 424, 497, 511, 568, 584, 689, 728, 742, 848, 923, 949, 994, 1022, 1136, 1168, 1378, 1456, 1484, 1846, 1898, 1988, 2044, 2756, 2968, 3692, 3763, 3796, 3869, 3976, 4088, 4823, 5183, 5512, 5936, 6461, 6643, 7384, 7526, 7592, 7738, 7952, 8176, 9646, 10366, 11024, 12922, 13286, 14768, 15052, 15184, 15476, 19292, 20732, 25844, 26341, 26572, 27083, 30104, 30952, 36281, 38584, 41464, 48919, 50297, 51688, 52682, 53144, 54166, 60208, 61904, 67379, 72562, 77168, 82928, 97838, 100594, 103376, 105364, 106288, 108332, 134758, 145124, 195676, 201188, 210728, 216664, 269516, 274699, 290248, 342433, 352079, 391352, 402376, 421456, 433328, 471653, 539032, 549398, 580496, 684866, 704158, 782704, 804752, 943306, 1078064, 1098796, 1369732, 1408316, 1886612, 1922893, 2197592, 2739464, 2816632, 3571087, 3773224, 3845786, 4395184, 5478928, 5633264, 7142174, 7546448, 7691572, 14284348, 15383144, 24997609, 28568696, 30766288, 49995218, 57137392, 99990436, 199980872, 399961744]

約数ペア:

[(1, 399961744), (2, 199980872), (4, 99990436), (7, 57137392), (8, 49995218), (13, 30766288), (14, 28568696), (16, 24997609), (26, 15383144), (28, 14284348), (52, 7691572), (53, 7546448), (56, 7142174), (71, 5633264), (73, 5478928), (91, 4395184), (104, 3845786), (106, 3773224), (112, 3571087), (142, 2816632), (146, 2739464), (182, 2197592), (208, 1922893), (212, 1886612), (284, 1408316), (292, 1369732), (364, 1098796), (371, 1078064), (424, 943306), (497, 804752), (511, 782704), (568, 704158), (584, 684866), (689, 580496), (728, 549398), (742, 539032), (848, 471653), (923, 433328), (949, 421456), (994, 402376), (1022, 391352), (1136, 352079), (1168, 342433), (1378, 290248), (1456, 274699), (1484, 269516), (1846, 216664), (1898, 210728), (1988, 201188), (2044, 195676), (2756, 145124), (2968, 134758), (3692, 108332), (3763, 106288), (3796, 105364), (3869, 103376), (3976, 100594), (4088, 97838), (4823, 82928), (5183, 77168), (5512, 72562), (5936, 67379), (6461, 61904), (6643, 60208), (7384, 54166), (7526, 53144), (7592, 52682), (7738, 51688), (7952, 50297), (8176, 48919), (9646, 41464), (10366, 38584), (11024, 36281), (12922, 30952), (13286, 30104), (14768, 27083), (15052, 26572), (15184, 26341), (15476, 25844), (19292, 20732)]