21167116820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{61961}}^1$

素因数の和:62049

約数の個数: 96

約数和(自身を含む): 49966156800

約数和(自身を除く): 28799039980

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 31, 38, 58, 62, 76, 95, 116, 124, 145, 155, 190, 290, 310, 380, 551, 580, 589, 620, 899, 1102, 1178, 1798, 2204, 2356, 2755, 2945, 3596, 4495, 5510, 5890, 8990, 11020, 11780, 17081, 17980, 34162, 61961, 68324, 85405, 123922, 170810, 247844, 309805, 341620, 619610, 1177259, 1239220, 1796869, 1920791, 2354518, 3593738, 3841582, 4709036, 5886295, 7187476, 7683164, 8984345, 9603955, 11772590, 17968690, 19207910, 23545180, 34140511, 35937380, 36495029, 38415820, 55702939, 68281022, 72990058, 111405878, 136562044, 145980116, 170702555, 182475145, 222811756, 278514695, 341405110, 364950290, 557029390, 682810220, 729900580, 1058355841, 1114058780, 2116711682, 4233423364, 5291779205, 10583558410, 21167116820]

約数ペア:

[(1, 21167116820), (2, 10583558410), (4, 5291779205), (5, 4233423364), (10, 2116711682), (19, 1114058780), (20, 1058355841), (29, 729900580), (31, 682810220), (38, 557029390), (58, 364950290), (62, 341405110), (76, 278514695), (95, 222811756), (116, 182475145), (124, 170702555), (145, 145980116), (155, 136562044), (190, 111405878), (290, 72990058), (310, 68281022), (380, 55702939), (551, 38415820), (580, 36495029), (589, 35937380), (620, 34140511), (899, 23545180), (1102, 19207910), (1178, 17968690), (1798, 11772590), (2204, 9603955), (2356, 8984345), (2755, 7683164), (2945, 7187476), (3596, 5886295), (4495, 4709036), (5510, 3841582), (5890, 3593738), (8990, 2354518), (11020, 1920791), (11780, 1796869), (17081, 1239220), (17980, 1177259), (34162, 619610), (61961, 341620), (68324, 309805), (85405, 247844), (123922, 170810)]