1639348750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1277}}^1$

素因数の和:1391

約数の個数: 80

約数和(自身を含む): 3353676480

約数和(自身を除く): 1714327730

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 79, 125, 130, 158, 250, 325, 395, 625, 650, 790, 1027, 1250, 1277, 1625, 1975, 2054, 2554, 3250, 3950, 5135, 6385, 8125, 9875, 10270, 12770, 16250, 16601, 19750, 25675, 31925, 33202, 49375, 51350, 63850, 83005, 98750, 100883, 128375, 159625, 166010, 201766, 256750, 319250, 415025, 504415, 641875, 798125, 830050, 1008830, 1283750, 1311479, 1596250, 2075125, 2522075, 2622958, 4150250, 5044150, 6557395, 10375625, 12610375, 13114790, 20751250, 25220750, 32786975, 63051875, 65573950, 126103750, 163934875, 327869750, 819674375, 1639348750]

約数ペア:

[(1, 1639348750), (2, 819674375), (5, 327869750), (10, 163934875), (13, 126103750), (25, 65573950), (26, 63051875), (50, 32786975), (65, 25220750), (79, 20751250), (125, 13114790), (130, 12610375), (158, 10375625), (250, 6557395), (325, 5044150), (395, 4150250), (625, 2622958), (650, 2522075), (790, 2075125), (1027, 1596250), (1250, 1311479), (1277, 1283750), (1625, 1008830), (1975, 830050), (2054, 798125), (2554, 641875), (3250, 504415), (3950, 415025), (5135, 319250), (6385, 256750), (8125, 201766), (9875, 166010), (10270, 159625), (12770, 128375), (16250, 100883), (16601, 98750), (19750, 83005), (25675, 63850), (31925, 51350), (33202, 49375)]