19728500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:258

約数の個数: 96

約数和(自身を含む): 50004864

約数和(自身を除く): 30276364

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 125, 170, 187, 211, 220, 250, 275, 340, 374, 422, 425, 500, 550, 748, 844, 850, 935, 1055, 1100, 1375, 1700, 1870, 2110, 2125, 2321, 2750, 3587, 3740, 4220, 4250, 4642, 4675, 5275, 5500, 7174, 8500, 9284, 9350, 10550, 11605, 14348, 17935, 18700, 21100, 23210, 23375, 26375, 35870, 39457, 46420, 46750, 52750, 58025, 71740, 78914, 89675, 93500, 105500, 116050, 157828, 179350, 197285, 232100, 290125, 358700, 394570, 448375, 580250, 789140, 896750, 986425, 1160500, 1793500, 1972850, 3945700, 4932125, 9864250, 19728500]

約数ペア:

[(1, 19728500), (2, 9864250), (4, 4932125), (5, 3945700), (10, 1972850), (11, 1793500), (17, 1160500), (20, 986425), (22, 896750), (25, 789140), (34, 580250), (44, 448375), (50, 394570), (55, 358700), (68, 290125), (85, 232100), (100, 197285), (110, 179350), (125, 157828), (170, 116050), (187, 105500), (211, 93500), (220, 89675), (250, 78914), (275, 71740), (340, 58025), (374, 52750), (422, 46750), (425, 46420), (500, 39457), (550, 35870), (748, 26375), (844, 23375), (850, 23210), (935, 21100), (1055, 18700), (1100, 17935), (1375, 14348), (1700, 11605), (1870, 10550), (2110, 9350), (2125, 9284), (2321, 8500), (2750, 7174), (3587, 5500), (3740, 5275), (4220, 4675), (4250, 4642)]