21028490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:503

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 26000758

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 41, 70, 82, 85, 119, 170, 205, 238, 287, 410, 431, 574, 595, 697, 862, 1190, 1394, 1435, 2155, 2870, 3017, 3485, 4310, 4879, 6034, 6970, 7327, 9758, 14654, 15085, 17671, 24395, 30170, 35342, 36635, 48790, 51289, 73270, 88355, 102578, 123697, 176710, 247394, 256445, 300407, 512890, 600814, 618485, 1236970, 1502035, 2102849, 3004070, 4205698, 10514245, 21028490]

約数ペア:

[(1, 21028490), (2, 10514245), (5, 4205698), (7, 3004070), (10, 2102849), (14, 1502035), (17, 1236970), (34, 618485), (35, 600814), (41, 512890), (70, 300407), (82, 256445), (85, 247394), (119, 176710), (170, 123697), (205, 102578), (238, 88355), (287, 73270), (410, 51289), (431, 48790), (574, 36635), (595, 35342), (697, 30170), (862, 24395), (1190, 17671), (1394, 15085), (1435, 14654), (2155, 9758), (2870, 7327), (3017, 6970), (3485, 6034), (4310, 4879)]