21138650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1913}}^1$

素因数の和:1955

約数の個数: 48

約数和(自身を含む): 44856504

約数和(自身を除く): 23717854

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1913, 2210, 3826, 5525, 9565, 11050, 19130, 24869, 32521, 47825, 49738, 65042, 95650, 124345, 162605, 248690, 325210, 422773, 621725, 813025, 845546, 1243450, 1626050, 2113865, 4227730, 10569325, 21138650]

約数ペア:

[(1, 21138650), (2, 10569325), (5, 4227730), (10, 2113865), (13, 1626050), (17, 1243450), (25, 845546), (26, 813025), (34, 621725), (50, 422773), (65, 325210), (85, 248690), (130, 162605), (170, 124345), (221, 95650), (325, 65042), (425, 49738), (442, 47825), (650, 32521), (850, 24869), (1105, 19130), (1913, 11050), (2210, 9565), (3826, 5525)]