19789952800

素因数分解:

$2^5\times 5^2\times {\mathrm{109}}^1\times {\mathrm{127}}^1\times {\mathrm{1787}}^1$

素因数の和:2043

約数の個数: 144

約数和(自身を含む): 49166853120

約数和(自身を除く): 29376900320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 109, 127, 160, 200, 218, 254, 400, 436, 508, 545, 635, 800, 872, 1016, 1090, 1270, 1744, 1787, 2032, 2180, 2540, 2725, 3175, 3488, 3574, 4064, 4360, 5080, 5450, 6350, 7148, 8720, 8935, 10160, 10900, 12700, 13843, 14296, 17440, 17870, 20320, 21800, 25400, 27686, 28592, 35740, 43600, 44675, 50800, 55372, 57184, 69215, 71480, 87200, 89350, 101600, 110744, 138430, 142960, 178700, 194783, 221488, 226949, 276860, 285920, 346075, 357400, 389566, 442976, 453898, 553720, 692150, 714800, 779132, 907796, 973915, 1107440, 1134745, 1384300, 1429600, 1558264, 1815592, 1947830, 2214880, 2269490, 2768600, 3116528, 3631184, 3895660, 4538980, 4869575, 5537200, 5673725, 6233056, 7262368, 7791320, 9077960, 9739150, 11074400, 11347450, 15582640, 18155920, 19478300, 22694900, 24737441, 31165280, 36311840, 38956600, 45389800, 49474882, 77913200, 90779600, 98949764, 123687205, 155826400, 181559200, 197899528, 247374410, 395799056, 494748820, 618436025, 791598112, 989497640, 1236872050, 1978995280, 2473744100, 3957990560, 4947488200, 9894976400, 19789952800]

約数ペア:

[(1, 19789952800), (2, 9894976400), (4, 4947488200), (5, 3957990560), (8, 2473744100), (10, 1978995280), (16, 1236872050), (20, 989497640), (25, 791598112), (32, 618436025), (40, 494748820), (50, 395799056), (80, 247374410), (100, 197899528), (109, 181559200), (127, 155826400), (160, 123687205), (200, 98949764), (218, 90779600), (254, 77913200), (400, 49474882), (436, 45389800), (508, 38956600), (545, 36311840), (635, 31165280), (800, 24737441), (872, 22694900), (1016, 19478300), (1090, 18155920), (1270, 15582640), (1744, 11347450), (1787, 11074400), (2032, 9739150), (2180, 9077960), (2540, 7791320), (2725, 7262368), (3175, 6233056), (3488, 5673725), (3574, 5537200), (4064, 4869575), (4360, 4538980), (5080, 3895660), (5450, 3631184), (6350, 3116528), (7148, 2768600), (8720, 2269490), (8935, 2214880), (10160, 1947830), (10900, 1815592), (12700, 1558264), (13843, 1429600), (14296, 1384300), (17440, 1134745), (17870, 1107440), (20320, 973915), (21800, 907796), (25400, 779132), (27686, 714800), (28592, 692150), (35740, 553720), (43600, 453898), (44675, 442976), (50800, 389566), (55372, 357400), (57184, 346075), (69215, 285920), (71480, 276860), (87200, 226949), (89350, 221488), (101600, 194783), (110744, 178700), (138430, 142960)]