21769540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{829}}^1$

素因数の和:952

約数の個数: 48

約数和(自身を含む): 49780080

約数和(自身を除く): 28010540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 829, 1010, 1313, 1658, 2020, 2626, 3316, 4145, 5252, 6565, 8290, 10777, 13130, 16580, 21554, 26260, 43108, 53885, 83729, 107770, 167458, 215540, 334916, 418645, 837290, 1088477, 1674580, 2176954, 4353908, 5442385, 10884770, 21769540]

約数ペア:

[(1, 21769540), (2, 10884770), (4, 5442385), (5, 4353908), (10, 2176954), (13, 1674580), (20, 1088477), (26, 837290), (52, 418645), (65, 334916), (101, 215540), (130, 167458), (202, 107770), (260, 83729), (404, 53885), (505, 43108), (829, 26260), (1010, 21554), (1313, 16580), (1658, 13130), (2020, 10777), (2626, 8290), (3316, 6565), (4145, 5252)]