78849820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1319}}^1$

素因数の和:1403

約数の個数: 72

約数和(自身を含む): 195924960

約数和(自身を除く): 117075140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 427, 490, 610, 854, 980, 1220, 1319, 1708, 2135, 2638, 2989, 4270, 5276, 5978, 6595, 8540, 9233, 11956, 13190, 14945, 18466, 26380, 29890, 36932, 46165, 59780, 64631, 80459, 92330, 129262, 160918, 184660, 258524, 321836, 323155, 402295, 563213, 646310, 804590, 1126426, 1292620, 1609180, 2252852, 2816065, 3942491, 5632130, 7884982, 11264260, 15769964, 19712455, 39424910, 78849820]

約数ペア:

[(1, 78849820), (2, 39424910), (4, 19712455), (5, 15769964), (7, 11264260), (10, 7884982), (14, 5632130), (20, 3942491), (28, 2816065), (35, 2252852), (49, 1609180), (61, 1292620), (70, 1126426), (98, 804590), (122, 646310), (140, 563213), (196, 402295), (244, 323155), (245, 321836), (305, 258524), (427, 184660), (490, 160918), (610, 129262), (854, 92330), (980, 80459), (1220, 64631), (1319, 59780), (1708, 46165), (2135, 36932), (2638, 29890), (2989, 26380), (4270, 18466), (5276, 14945), (5978, 13190), (6595, 11956), (8540, 9233)]