21760245

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4133}}^1$

素因数の和:4163

約数の個数: 40

約数和(自身を含む): 42017976

約数和(自身を除く): 20257731

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4133, 5265, 12399, 20665, 37197, 53729, 61995, 111591, 161187, 185985, 268645, 334773, 483561, 557955, 805935, 1450683, 1673865, 2417805, 4352049, 7253415, 21760245]

約数ペア:

[(1, 21760245), (3, 7253415), (5, 4352049), (9, 2417805), (13, 1673865), (15, 1450683), (27, 805935), (39, 557955), (45, 483561), (65, 334773), (81, 268645), (117, 185985), (135, 161187), (195, 111591), (351, 61995), (405, 53729), (585, 37197), (1053, 20665), (1755, 12399), (4133, 5265)]