28100020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 68640768

約数和(自身を除く): 40540748

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 37, 46, 52, 65, 74, 92, 115, 127, 130, 148, 185, 230, 254, 260, 299, 370, 460, 481, 508, 598, 635, 740, 851, 962, 1196, 1270, 1495, 1651, 1702, 1924, 2405, 2540, 2921, 2990, 3302, 3404, 4255, 4699, 4810, 5842, 5980, 6604, 8255, 8510, 9398, 9620, 11063, 11684, 14605, 16510, 17020, 18796, 22126, 23495, 29210, 33020, 37973, 44252, 46990, 55315, 58420, 61087, 75946, 93980, 108077, 110630, 122174, 151892, 189865, 216154, 221260, 244348, 305435, 379730, 432308, 540385, 610870, 759460, 1080770, 1221740, 1405001, 2161540, 2810002, 5620004, 7025005, 14050010, 28100020]

約数ペア:

[(1, 28100020), (2, 14050010), (4, 7025005), (5, 5620004), (10, 2810002), (13, 2161540), (20, 1405001), (23, 1221740), (26, 1080770), (37, 759460), (46, 610870), (52, 540385), (65, 432308), (74, 379730), (92, 305435), (115, 244348), (127, 221260), (130, 216154), (148, 189865), (185, 151892), (230, 122174), (254, 110630), (260, 108077), (299, 93980), (370, 75946), (460, 61087), (481, 58420), (508, 55315), (598, 46990), (635, 44252), (740, 37973), (851, 33020), (962, 29210), (1196, 23495), (1270, 22126), (1495, 18796), (1651, 17020), (1702, 16510), (1924, 14605), (2405, 11684), (2540, 11063), (2921, 9620), (2990, 9398), (3302, 8510), (3404, 8255), (4255, 6604), (4699, 5980), (4810, 5842)]