379904980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{208739}}^1$

素因数の和:208768

約数の個数: 48

約数和(自身を含む): 981912960

約数和(自身を除く): 602007980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 208739, 417478, 834956, 1043695, 1461173, 2087390, 2713607, 2922346, 4174780, 5427214, 5844692, 7305865, 10854428, 13568035, 14611730, 18995249, 27136070, 29223460, 37990498, 54272140, 75980996, 94976245, 189952490, 379904980]

約数ペア:

[(1, 379904980), (2, 189952490), (4, 94976245), (5, 75980996), (7, 54272140), (10, 37990498), (13, 29223460), (14, 27136070), (20, 18995249), (26, 14611730), (28, 13568035), (35, 10854428), (52, 7305865), (65, 5844692), (70, 5427214), (91, 4174780), (130, 2922346), (140, 2713607), (182, 2087390), (260, 1461173), (364, 1043695), (455, 834956), (910, 417478), (1820, 208739)]