28978180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:665

約数の個数: 96

約数和(自身を含む): 78446592

約数和(自身を除く): 49468412

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 217, 220, 308, 310, 341, 385, 434, 607, 620, 682, 770, 868, 1085, 1214, 1364, 1540, 1705, 2170, 2387, 2428, 3035, 3410, 4249, 4340, 4774, 6070, 6677, 6820, 8498, 9548, 11935, 12140, 13354, 16996, 18817, 21245, 23870, 26708, 33385, 37634, 42490, 46739, 47740, 66770, 75268, 84980, 93478, 94085, 131719, 133540, 186956, 188170, 206987, 233695, 263438, 376340, 413974, 467390, 526876, 658595, 827948, 934780, 1034935, 1317190, 1448909, 2069870, 2634380, 2897818, 4139740, 5795636, 7244545, 14489090, 28978180]

約数ペア:

[(1, 28978180), (2, 14489090), (4, 7244545), (5, 5795636), (7, 4139740), (10, 2897818), (11, 2634380), (14, 2069870), (20, 1448909), (22, 1317190), (28, 1034935), (31, 934780), (35, 827948), (44, 658595), (55, 526876), (62, 467390), (70, 413974), (77, 376340), (110, 263438), (124, 233695), (140, 206987), (154, 188170), (155, 186956), (217, 133540), (220, 131719), (308, 94085), (310, 93478), (341, 84980), (385, 75268), (434, 66770), (607, 47740), (620, 46739), (682, 42490), (770, 37634), (868, 33385), (1085, 26708), (1214, 23870), (1364, 21245), (1540, 18817), (1705, 16996), (2170, 13354), (2387, 12140), (2428, 11935), (3035, 9548), (3410, 8498), (4249, 6820), (4340, 6677), (4774, 6070)]