198876470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:921

約数の個数: 64

約数和(自身を含む): 404974080

約数和(自身を除く): 206097610

約数列:

[1, 2, 5, 10, 13, 26, 31, 61, 62, 65, 122, 130, 155, 305, 310, 403, 610, 793, 806, 809, 1586, 1618, 1891, 2015, 3782, 3965, 4030, 4045, 7930, 8090, 9455, 10517, 18910, 21034, 24583, 25079, 49166, 49349, 50158, 52585, 98698, 105170, 122915, 125395, 245830, 246745, 250790, 326027, 493490, 641537, 652054, 1283074, 1529819, 1630135, 3059638, 3207685, 3260270, 6415370, 7649095, 15298190, 19887647, 39775294, 99438235, 198876470]

約数ペア:

[(1, 198876470), (2, 99438235), (5, 39775294), (10, 19887647), (13, 15298190), (26, 7649095), (31, 6415370), (61, 3260270), (62, 3207685), (65, 3059638), (122, 1630135), (130, 1529819), (155, 1283074), (305, 652054), (310, 641537), (403, 493490), (610, 326027), (793, 250790), (806, 246745), (809, 245830), (1586, 125395), (1618, 122915), (1891, 105170), (2015, 98698), (3782, 52585), (3965, 50158), (4030, 49349), (4045, 49166), (7930, 25079), (8090, 24583), (9455, 21034), (10517, 18910)]