18944380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1487}}^1$

素因数の和:1523

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 30927428

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1487, 1820, 2548, 2974, 3185, 5948, 6370, 7435, 10409, 12740, 14870, 19331, 20818, 29740, 38662, 41636, 52045, 72863, 77324, 96655, 104090, 135317, 145726, 193310, 208180, 270634, 291452, 364315, 386620, 541268, 676585, 728630, 947219, 1353170, 1457260, 1894438, 2706340, 3788876, 4736095, 9472190, 18944380]

約数ペア:

[(1, 18944380), (2, 9472190), (4, 4736095), (5, 3788876), (7, 2706340), (10, 1894438), (13, 1457260), (14, 1353170), (20, 947219), (26, 728630), (28, 676585), (35, 541268), (49, 386620), (52, 364315), (65, 291452), (70, 270634), (91, 208180), (98, 193310), (130, 145726), (140, 135317), (182, 104090), (196, 96655), (245, 77324), (260, 72863), (364, 52045), (455, 41636), (490, 38662), (637, 29740), (910, 20818), (980, 19331), (1274, 14870), (1487, 12740), (1820, 10409), (2548, 7435), (2974, 6370), (3185, 5948)]