28390493780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{378439}}^1$

素因数の和:378501

約数の個数: 72

約数和(自身を含む): 67646906880

約数和(自身を除く): 39256413100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 310, 341, 484, 605, 620, 682, 1210, 1364, 1705, 2420, 3410, 3751, 6820, 7502, 15004, 18755, 37510, 75020, 378439, 756878, 1513756, 1892195, 3784390, 4162829, 7568780, 8325658, 11731609, 16651316, 20814145, 23463218, 41628290, 45791119, 46926436, 58658045, 83256580, 91582238, 117316090, 129047699, 183164476, 228955595, 234632180, 258095398, 457911190, 516190796, 645238495, 915822380, 1290476990, 1419524689, 2580953980, 2839049378, 5678098756, 7097623445, 14195246890, 28390493780]

約数ペア:

[(1, 28390493780), (2, 14195246890), (4, 7097623445), (5, 5678098756), (10, 2839049378), (11, 2580953980), (20, 1419524689), (22, 1290476990), (31, 915822380), (44, 645238495), (55, 516190796), (62, 457911190), (110, 258095398), (121, 234632180), (124, 228955595), (155, 183164476), (220, 129047699), (242, 117316090), (310, 91582238), (341, 83256580), (484, 58658045), (605, 46926436), (620, 45791119), (682, 41628290), (1210, 23463218), (1364, 20814145), (1705, 16651316), (2420, 11731609), (3410, 8325658), (3751, 7568780), (6820, 4162829), (7502, 3784390), (15004, 1892195), (18755, 1513756), (37510, 756878), (75020, 378439)]