21244340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{809}}^1$

素因数の和:932

約数の個数: 48

約数和(自身を含む): 48580560

約数和(自身を除く): 27336220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 809, 1010, 1313, 1618, 2020, 2626, 3236, 4045, 5252, 6565, 8090, 10517, 13130, 16180, 21034, 26260, 42068, 52585, 81709, 105170, 163418, 210340, 326836, 408545, 817090, 1062217, 1634180, 2124434, 4248868, 5311085, 10622170, 21244340]

約数ペア:

[(1, 21244340), (2, 10622170), (4, 5311085), (5, 4248868), (10, 2124434), (13, 1634180), (20, 1062217), (26, 817090), (52, 408545), (65, 326836), (101, 210340), (130, 163418), (202, 105170), (260, 81709), (404, 52585), (505, 42068), (809, 26260), (1010, 21034), (1313, 16180), (1618, 13130), (2020, 10517), (2626, 8090), (3236, 6565), (4045, 5252)]