2189655

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 4324320

約数和(自身を除く): 2134665

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 197, 247, 285, 585, 591, 741, 855, 985, 1235, 1773, 2223, 2561, 2955, 3705, 3743, 7683, 8865, 11115, 11229, 12805, 18715, 23049, 33687, 38415, 48659, 56145, 115245, 145977, 168435, 243295, 437931, 729885, 2189655]

約数ペア:

[(1, 2189655), (3, 729885), (5, 437931), (9, 243295), (13, 168435), (15, 145977), (19, 115245), (39, 56145), (45, 48659), (57, 38415), (65, 33687), (95, 23049), (117, 18715), (171, 12805), (195, 11229), (197, 11115), (247, 8865), (285, 7683), (585, 3743), (591, 3705), (741, 2955), (855, 2561), (985, 2223), (1235, 1773)]