21698703

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 14817777

約数列:

[1, 3, 9, 13, 19, 39, 43, 57, 117, 129, 171, 227, 247, 387, 559, 681, 741, 817, 1677, 2043, 2223, 2451, 2951, 4313, 5031, 7353, 8853, 9761, 10621, 12939, 26559, 29283, 31863, 38817, 56069, 87849, 95589, 126893, 168207, 185459, 380679, 504621, 556377, 1142037, 1669131, 2410967, 7232901, 21698703]

約数ペア:

[(1, 21698703), (3, 7232901), (9, 2410967), (13, 1669131), (19, 1142037), (39, 556377), (43, 504621), (57, 380679), (117, 185459), (129, 168207), (171, 126893), (227, 95589), (247, 87849), (387, 56069), (559, 38817), (681, 31863), (741, 29283), (817, 26559), (1677, 12939), (2043, 10621), (2223, 9761), (2451, 8853), (2951, 7353), (4313, 5031)]