18953415

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 35773920

約数和(自身を除く): 16820505

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 179, 181, 195, 537, 543, 585, 895, 905, 1611, 1629, 2327, 2353, 2685, 2715, 6981, 7059, 8055, 8145, 11635, 11765, 20943, 21177, 32399, 34905, 35295, 97197, 104715, 105885, 161995, 291591, 421187, 485985, 1263561, 1457955, 2105935, 3790683, 6317805, 18953415]

約数ペア:

[(1, 18953415), (3, 6317805), (5, 3790683), (9, 2105935), (13, 1457955), (15, 1263561), (39, 485985), (45, 421187), (65, 291591), (117, 161995), (179, 105885), (181, 104715), (195, 97197), (537, 35295), (543, 34905), (585, 32399), (895, 21177), (905, 20943), (1611, 11765), (1629, 11635), (2327, 8145), (2353, 8055), (2685, 7059), (2715, 6981)]