20428140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:279

約数の個数: 96

約数和(自身を含む): 60673536

約数和(自身を除く): 40245396

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 113, 115, 131, 138, 226, 230, 262, 276, 339, 345, 393, 452, 460, 524, 565, 655, 678, 690, 786, 1130, 1310, 1356, 1380, 1572, 1695, 1965, 2260, 2599, 2620, 3013, 3390, 3930, 5198, 6026, 6780, 7797, 7860, 9039, 10396, 12052, 12995, 14803, 15065, 15594, 18078, 25990, 29606, 30130, 31188, 36156, 38985, 44409, 45195, 51980, 59212, 60260, 74015, 77970, 88818, 90390, 148030, 155940, 177636, 180780, 222045, 296060, 340469, 444090, 680938, 888180, 1021407, 1361876, 1702345, 2042814, 3404690, 4085628, 5107035, 6809380, 10214070, 20428140]

約数ペア:

[(1, 20428140), (2, 10214070), (3, 6809380), (4, 5107035), (5, 4085628), (6, 3404690), (10, 2042814), (12, 1702345), (15, 1361876), (20, 1021407), (23, 888180), (30, 680938), (46, 444090), (60, 340469), (69, 296060), (92, 222045), (113, 180780), (115, 177636), (131, 155940), (138, 148030), (226, 90390), (230, 88818), (262, 77970), (276, 74015), (339, 60260), (345, 59212), (393, 51980), (452, 45195), (460, 44409), (524, 38985), (565, 36156), (655, 31188), (678, 30130), (690, 29606), (786, 25990), (1130, 18078), (1310, 15594), (1356, 15065), (1380, 14803), (1572, 12995), (1695, 12052), (1965, 10396), (2260, 9039), (2599, 7860), (2620, 7797), (3013, 6780), (3390, 6026), (3930, 5198)]