646768400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{419}}^1$

素因数の和:681

約数の個数: 120

約数和(自身を含む): 1656456480

約数和(自身を除く): 1009688080

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 227, 272, 340, 400, 419, 425, 454, 680, 838, 850, 908, 1135, 1360, 1676, 1700, 1816, 2095, 2270, 3352, 3400, 3632, 3859, 4190, 4540, 5675, 6704, 6800, 7123, 7718, 8380, 9080, 10475, 11350, 14246, 15436, 16760, 18160, 19295, 20950, 22700, 28492, 30872, 33520, 35615, 38590, 41900, 45400, 56984, 61744, 71230, 77180, 83800, 90800, 95113, 96475, 113968, 142460, 154360, 167600, 178075, 190226, 192950, 284920, 308720, 356150, 380452, 385900, 475565, 569840, 712300, 760904, 771800, 951130, 1424600, 1521808, 1543600, 1616921, 1902260, 2377825, 2849200, 3233842, 3804520, 4755650, 6467684, 7609040, 8084605, 9511300, 12935368, 16169210, 19022600, 25870736, 32338420, 38045200, 40423025, 64676840, 80846050, 129353680, 161692100, 323384200, 646768400]

約数ペア:

[(1, 646768400), (2, 323384200), (4, 161692100), (5, 129353680), (8, 80846050), (10, 64676840), (16, 40423025), (17, 38045200), (20, 32338420), (25, 25870736), (34, 19022600), (40, 16169210), (50, 12935368), (68, 9511300), (80, 8084605), (85, 7609040), (100, 6467684), (136, 4755650), (170, 3804520), (200, 3233842), (227, 2849200), (272, 2377825), (340, 1902260), (400, 1616921), (419, 1543600), (425, 1521808), (454, 1424600), (680, 951130), (838, 771800), (850, 760904), (908, 712300), (1135, 569840), (1360, 475565), (1676, 385900), (1700, 380452), (1816, 356150), (2095, 308720), (2270, 284920), (3352, 192950), (3400, 190226), (3632, 178075), (3859, 167600), (4190, 154360), (4540, 142460), (5675, 113968), (6704, 96475), (6800, 95113), (7123, 90800), (7718, 83800), (8380, 77180), (9080, 71230), (10475, 61744), (11350, 56984), (14246, 45400), (15436, 41900), (16760, 38590), (18160, 35615), (19295, 33520), (20950, 30872), (22700, 28492)]