20816908

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{433}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 23805236

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 101, 119, 202, 238, 404, 433, 476, 707, 866, 1414, 1717, 1732, 2828, 3031, 3434, 6062, 6868, 7361, 12019, 12124, 14722, 24038, 29444, 43733, 48076, 51527, 87466, 103054, 174932, 206108, 306131, 612262, 743461, 1224524, 1486922, 2973844, 5204227, 10408454, 20816908]

約数ペア:

[(1, 20816908), (2, 10408454), (4, 5204227), (7, 2973844), (14, 1486922), (17, 1224524), (28, 743461), (34, 612262), (68, 306131), (101, 206108), (119, 174932), (202, 103054), (238, 87466), (404, 51527), (433, 48076), (476, 43733), (707, 29444), (866, 24038), (1414, 14722), (1717, 12124), (1732, 12019), (2828, 7361), (3031, 6868), (3434, 6062)]