19981680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{83257}}^1$

素因数の和:83273

約数の個数: 40

約数和(自身を含む): 61943952

約数和(自身を除く): 41962272

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 83257, 166514, 249771, 333028, 416285, 499542, 666056, 832570, 999084, 1248855, 1332112, 1665140, 1998168, 2497710, 3330280, 3996336, 4995420, 6660560, 9990840, 19981680]

約数ペア:

[(1, 19981680), (2, 9990840), (3, 6660560), (4, 4995420), (5, 3996336), (6, 3330280), (8, 2497710), (10, 1998168), (12, 1665140), (15, 1332112), (16, 1248855), (20, 999084), (24, 832570), (30, 666056), (40, 499542), (48, 416285), (60, 333028), (80, 249771), (120, 166514), (240, 83257)]