20838230

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{43}}^2$

素因数の和:130

約数の個数: 72

約数和(自身を含む): 46613232

約数和(自身を除く): 25775002

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 43, 46, 49, 70, 86, 98, 115, 161, 215, 230, 245, 301, 322, 430, 490, 602, 805, 989, 1127, 1505, 1610, 1849, 1978, 2107, 2254, 3010, 3698, 4214, 4945, 5635, 6923, 9245, 9890, 10535, 11270, 12943, 13846, 18490, 21070, 25886, 34615, 42527, 48461, 64715, 69230, 85054, 90601, 96922, 129430, 181202, 212635, 242305, 297689, 425270, 453005, 484610, 595378, 906010, 1488445, 2083823, 2976890, 4167646, 10419115, 20838230]

約数ペア:

[(1, 20838230), (2, 10419115), (5, 4167646), (7, 2976890), (10, 2083823), (14, 1488445), (23, 906010), (35, 595378), (43, 484610), (46, 453005), (49, 425270), (70, 297689), (86, 242305), (98, 212635), (115, 181202), (161, 129430), (215, 96922), (230, 90601), (245, 85054), (301, 69230), (322, 64715), (430, 48461), (490, 42527), (602, 34615), (805, 25886), (989, 21070), (1127, 18490), (1505, 13846), (1610, 12943), (1849, 11270), (1978, 10535), (2107, 9890), (2254, 9245), (3010, 6923), (3698, 5635), (4214, 4945)]