28440711

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 47698560

約数和(自身を除く): 19257849

約数列:

[1, 3, 9, 13, 17, 39, 51, 79, 117, 153, 181, 221, 237, 543, 663, 711, 1027, 1343, 1629, 1989, 2353, 3077, 3081, 4029, 7059, 9231, 9243, 12087, 14299, 17459, 21177, 27693, 40001, 42897, 52377, 120003, 128691, 157131, 185887, 243083, 360009, 557661, 729249, 1672983, 2187747, 3160079, 9480237, 28440711]

約数ペア:

[(1, 28440711), (3, 9480237), (9, 3160079), (13, 2187747), (17, 1672983), (39, 729249), (51, 557661), (79, 360009), (117, 243083), (153, 185887), (181, 157131), (221, 128691), (237, 120003), (543, 52377), (663, 42897), (711, 40001), (1027, 27693), (1343, 21177), (1629, 17459), (1989, 14299), (2353, 12087), (3077, 9243), (3081, 9231), (4029, 7059)]