21867100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{677}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 52965360

約数和(自身を除く): 31098260

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 95, 100, 170, 190, 323, 340, 380, 425, 475, 646, 677, 850, 950, 1292, 1354, 1615, 1700, 1900, 2708, 3230, 3385, 6460, 6770, 8075, 11509, 12863, 13540, 16150, 16925, 23018, 25726, 32300, 33850, 46036, 51452, 57545, 64315, 67700, 115090, 128630, 218671, 230180, 257260, 287725, 321575, 437342, 575450, 643150, 874684, 1093355, 1150900, 1286300, 2186710, 4373420, 5466775, 10933550, 21867100]

約数ペア:

[(1, 21867100), (2, 10933550), (4, 5466775), (5, 4373420), (10, 2186710), (17, 1286300), (19, 1150900), (20, 1093355), (25, 874684), (34, 643150), (38, 575450), (50, 437342), (68, 321575), (76, 287725), (85, 257260), (95, 230180), (100, 218671), (170, 128630), (190, 115090), (323, 67700), (340, 64315), (380, 57545), (425, 51452), (475, 46036), (646, 33850), (677, 32300), (850, 25726), (950, 23018), (1292, 16925), (1354, 16150), (1615, 13540), (1700, 12863), (1900, 11509), (2708, 8075), (3230, 6770), (3385, 6460)]