21965950

素因数分解:

$2^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 42497280

約数和(自身を除く): 20531330

約数列:

[1, 2, 5, 10, 25, 50, 67, 79, 83, 134, 158, 166, 335, 395, 415, 670, 790, 830, 1675, 1975, 2075, 3350, 3950, 4150, 5293, 5561, 6557, 10586, 11122, 13114, 26465, 27805, 32785, 52930, 55610, 65570, 132325, 139025, 163925, 264650, 278050, 327850, 439319, 878638, 2196595, 4393190, 10982975, 21965950]

約数ペア:

[(1, 21965950), (2, 10982975), (5, 4393190), (10, 2196595), (25, 878638), (50, 439319), (67, 327850), (79, 278050), (83, 264650), (134, 163925), (158, 139025), (166, 132325), (335, 65570), (395, 55610), (415, 52930), (670, 32785), (790, 27805), (830, 26465), (1675, 13114), (1975, 11122), (2075, 10586), (3350, 6557), (3950, 5561), (4150, 5293)]