20171105380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1\times {\mathrm{691}}^1$

素因数の和:1205

約数の個数: 96

約数和(自身を含む): 44022892032

約数和(自身を除く): 23851786652

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 367, 388, 410, 485, 691, 734, 820, 970, 1382, 1468, 1835, 1940, 2764, 3455, 3670, 3977, 6910, 7340, 7954, 13820, 15047, 15908, 19885, 28331, 30094, 35599, 39770, 56662, 60188, 67027, 71198, 75235, 79540, 113324, 134054, 141655, 142396, 150470, 177995, 253597, 268108, 283310, 300940, 335135, 355990, 507194, 566620, 670270, 711980, 1014388, 1267985, 1340540, 1459559, 2535970, 2748107, 2919118, 5071940, 5496214, 5838236, 7297795, 10397477, 10992428, 13740535, 14595590, 20794954, 24598909, 27481070, 29191180, 41589908, 49197818, 51987385, 54962140, 98395636, 103974770, 122994545, 207949540, 245989090, 491978180, 1008555269, 2017110538, 4034221076, 5042776345, 10085552690, 20171105380]

約数ペア:

[(1, 20171105380), (2, 10085552690), (4, 5042776345), (5, 4034221076), (10, 2017110538), (20, 1008555269), (41, 491978180), (82, 245989090), (97, 207949540), (164, 122994545), (194, 103974770), (205, 98395636), (367, 54962140), (388, 51987385), (410, 49197818), (485, 41589908), (691, 29191180), (734, 27481070), (820, 24598909), (970, 20794954), (1382, 14595590), (1468, 13740535), (1835, 10992428), (1940, 10397477), (2764, 7297795), (3455, 5838236), (3670, 5496214), (3977, 5071940), (6910, 2919118), (7340, 2748107), (7954, 2535970), (13820, 1459559), (15047, 1340540), (15908, 1267985), (19885, 1014388), (28331, 711980), (30094, 670270), (35599, 566620), (39770, 507194), (56662, 355990), (60188, 335135), (67027, 300940), (71198, 283310), (75235, 268108), (79540, 253597), (113324, 177995), (134054, 150470), (141655, 142396)]