20855334780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{3319}}^1\times {\mathrm{4987}}^1$

素因数の和:8328

約数の個数: 144

約数和(自身を含む): 72334778880

約数和(自身を除く): 51479444100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 3319, 4987, 6638, 9957, 9974, 13276, 14961, 16595, 19914, 19948, 23233, 24935, 29871, 29922, 33190, 34909, 39828, 44883, 46466, 49785, 49870, 59742, 59844, 66380, 69699, 69818, 74805, 89766, 92932, 99570, 99740, 104727, 116165, 119484, 139398, 139636, 149355, 149610, 174545, 179532, 199140, 209097, 209454, 224415, 232330, 278796, 298710, 299220, 314181, 348495, 349090, 418194, 418908, 448830, 464660, 523635, 597420, 628362, 696990, 698180, 836388, 897660, 1045485, 1047270, 1256724, 1393980, 1570905, 2090970, 2094540, 3141810, 4181940, 6283620, 16551853, 33103706, 49655559, 66207412, 82759265, 99311118, 115862971, 148966677, 165518530, 198622236, 231725942, 248277795, 297933354, 331037060, 347588913, 463451884, 496555590, 579314855, 595866708, 695177826, 744833385, 993111180, 1042766739, 1158629710, 1390355652, 1489666770, 1737944565, 2085533478, 2317259420, 2979333540, 3475889130, 4171066956, 5213833695, 6951778260, 10427667390, 20855334780]

約数ペア:

[(1, 20855334780), (2, 10427667390), (3, 6951778260), (4, 5213833695), (5, 4171066956), (6, 3475889130), (7, 2979333540), (9, 2317259420), (10, 2085533478), (12, 1737944565), (14, 1489666770), (15, 1390355652), (18, 1158629710), (20, 1042766739), (21, 993111180), (28, 744833385), (30, 695177826), (35, 595866708), (36, 579314855), (42, 496555590), (45, 463451884), (60, 347588913), (63, 331037060), (70, 297933354), (84, 248277795), (90, 231725942), (105, 198622236), (126, 165518530), (140, 148966677), (180, 115862971), (210, 99311118), (252, 82759265), (315, 66207412), (420, 49655559), (630, 33103706), (1260, 16551853), (3319, 6283620), (4987, 4181940), (6638, 3141810), (9957, 2094540), (9974, 2090970), (13276, 1570905), (14961, 1393980), (16595, 1256724), (19914, 1047270), (19948, 1045485), (23233, 897660), (24935, 836388), (29871, 698180), (29922, 696990), (33190, 628362), (34909, 597420), (39828, 523635), (44883, 464660), (46466, 448830), (49785, 418908), (49870, 418194), (59742, 349090), (59844, 348495), (66380, 314181), (69699, 299220), (69818, 298710), (74805, 278796), (89766, 232330), (92932, 224415), (99570, 209454), (99740, 209097), (104727, 199140), (116165, 179532), (119484, 174545), (139398, 149610), (139636, 149355)]