121819640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1801}}^1$

素因数の和:1920

約数の個数: 64

約数和(自身を含む): 291924000

約数和(自身を除く): 170104360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 356, 380, 445, 712, 760, 890, 1691, 1780, 1801, 3382, 3560, 3602, 6764, 7204, 8455, 9005, 13528, 14408, 16910, 18010, 33820, 34219, 36020, 67640, 68438, 72040, 136876, 160289, 171095, 273752, 320578, 342190, 641156, 684380, 801445, 1282312, 1368760, 1602890, 3045491, 3205780, 6090982, 6411560, 12181964, 15227455, 24363928, 30454910, 60909820, 121819640]

約数ペア:

[(1, 121819640), (2, 60909820), (4, 30454910), (5, 24363928), (8, 15227455), (10, 12181964), (19, 6411560), (20, 6090982), (38, 3205780), (40, 3045491), (76, 1602890), (89, 1368760), (95, 1282312), (152, 801445), (178, 684380), (190, 641156), (356, 342190), (380, 320578), (445, 273752), (712, 171095), (760, 160289), (890, 136876), (1691, 72040), (1780, 68438), (1801, 67640), (3382, 36020), (3560, 34219), (3602, 33820), (6764, 18010), (7204, 16910), (8455, 14408), (9005, 13528)]