18950260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 47200104

約数和(自身を除く): 28249844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 305, 317, 427, 490, 610, 634, 854, 980, 1220, 1268, 1585, 1708, 2135, 2219, 2989, 3170, 4270, 4438, 5978, 6340, 8540, 8876, 11095, 11956, 14945, 15533, 19337, 22190, 29890, 31066, 38674, 44380, 59780, 62132, 77348, 77665, 96685, 135359, 155330, 193370, 270718, 310660, 386740, 541436, 676795, 947513, 1353590, 1895026, 2707180, 3790052, 4737565, 9475130, 18950260]

約数ペア:

[(1, 18950260), (2, 9475130), (4, 4737565), (5, 3790052), (7, 2707180), (10, 1895026), (14, 1353590), (20, 947513), (28, 676795), (35, 541436), (49, 386740), (61, 310660), (70, 270718), (98, 193370), (122, 155330), (140, 135359), (196, 96685), (244, 77665), (245, 77348), (305, 62132), (317, 59780), (427, 44380), (490, 38674), (610, 31066), (634, 29890), (854, 22190), (980, 19337), (1220, 15533), (1268, 14945), (1585, 11956), (1708, 11095), (2135, 8876), (2219, 8540), (2989, 6340), (3170, 5978), (4270, 4438)]