20198991716

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{229}}^1\times {\mathrm{463}}^1\times {\mathrm{491}}^1$

素因数の和:1284

約数の個数: 48

約数和(自身を含む): 36019280640

約数和(自身を除く): 15820288924

約数列:

[1, 2, 4, 97, 194, 229, 388, 458, 463, 491, 916, 926, 982, 1852, 1964, 22213, 44426, 44911, 47627, 88852, 89822, 95254, 106027, 112439, 179644, 190508, 212054, 224878, 227333, 424108, 449756, 454666, 909332, 10284619, 10906583, 20569238, 21813166, 22051301, 41138476, 43626332, 44102602, 52059257, 88205204, 104118514, 208237028, 5049747929, 10099495858, 20198991716]

約数ペア:

[(1, 20198991716), (2, 10099495858), (4, 5049747929), (97, 208237028), (194, 104118514), (229, 88205204), (388, 52059257), (458, 44102602), (463, 43626332), (491, 41138476), (916, 22051301), (926, 21813166), (982, 20569238), (1852, 10906583), (1964, 10284619), (22213, 909332), (44426, 454666), (44911, 449756), (47627, 424108), (88852, 227333), (89822, 224878), (95254, 212054), (106027, 190508), (112439, 179644)]