20402010

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 59270400

約数和(自身を除く): 38868390

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 38, 41, 45, 54, 57, 82, 90, 95, 97, 114, 123, 135, 171, 190, 194, 205, 246, 270, 285, 291, 342, 369, 410, 485, 513, 570, 582, 615, 738, 779, 855, 873, 970, 1026, 1107, 1230, 1455, 1558, 1710, 1746, 1843, 1845, 2214, 2337, 2565, 2619, 2910, 3686, 3690, 3895, 3977, 4365, 4674, 5130, 5238, 5529, 5535, 7011, 7790, 7954, 8730, 9215, 11058, 11070, 11685, 11931, 13095, 14022, 16587, 18430, 19885, 21033, 23370, 23862, 26190, 27645, 33174, 35055, 35793, 39770, 42066, 49761, 55290, 59655, 70110, 71586, 75563, 82935, 99522, 105165, 107379, 119310, 151126, 165870, 178965, 210330, 214758, 226689, 248805, 357930, 377815, 453378, 497610, 536895, 680067, 755630, 1073790, 1133445, 1360134, 2040201, 2266890, 3400335, 4080402, 6800670, 10201005, 20402010]

約数ペア:

[(1, 20402010), (2, 10201005), (3, 6800670), (5, 4080402), (6, 3400335), (9, 2266890), (10, 2040201), (15, 1360134), (18, 1133445), (19, 1073790), (27, 755630), (30, 680067), (38, 536895), (41, 497610), (45, 453378), (54, 377815), (57, 357930), (82, 248805), (90, 226689), (95, 214758), (97, 210330), (114, 178965), (123, 165870), (135, 151126), (171, 119310), (190, 107379), (194, 105165), (205, 99522), (246, 82935), (270, 75563), (285, 71586), (291, 70110), (342, 59655), (369, 55290), (410, 49761), (485, 42066), (513, 39770), (570, 35793), (582, 35055), (615, 33174), (738, 27645), (779, 26190), (855, 23862), (873, 23370), (970, 21033), (1026, 19885), (1107, 18430), (1230, 16587), (1455, 14022), (1558, 13095), (1710, 11931), (1746, 11685), (1843, 11070), (1845, 11058), (2214, 9215), (2337, 8730), (2565, 7954), (2619, 7790), (2910, 7011), (3686, 5535), (3690, 5529), (3895, 5238), (3977, 5130), (4365, 4674)]