21225796670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{389}}^2$

素因数の和:894

約数の個数: 72

約数和(自身を含む): 41977826856

約数和(自身を除く): 20752030186

約数列:

[1, 2, 5, 10, 13, 26, 65, 83, 130, 166, 169, 338, 389, 415, 778, 830, 845, 1079, 1690, 1945, 2158, 3890, 5057, 5395, 10114, 10790, 14027, 25285, 28054, 32287, 50570, 64574, 65741, 70135, 131482, 140270, 151321, 161435, 302642, 322870, 328705, 419731, 657410, 756605, 839462, 1513210, 1967173, 2098655, 3934346, 4197310, 5456503, 9835865, 10913006, 12559643, 19671730, 25119286, 25573249, 27282515, 51146498, 54565030, 62798215, 125596430, 127866245, 163275359, 255732490, 326550718, 816376795, 1632753590, 2122579667, 4245159334, 10612898335, 21225796670]

約数ペア:

[(1, 21225796670), (2, 10612898335), (5, 4245159334), (10, 2122579667), (13, 1632753590), (26, 816376795), (65, 326550718), (83, 255732490), (130, 163275359), (166, 127866245), (169, 125596430), (338, 62798215), (389, 54565030), (415, 51146498), (778, 27282515), (830, 25573249), (845, 25119286), (1079, 19671730), (1690, 12559643), (1945, 10913006), (2158, 9835865), (3890, 5456503), (5057, 4197310), (5395, 3934346), (10114, 2098655), (10790, 1967173), (14027, 1513210), (25285, 839462), (28054, 756605), (32287, 657410), (50570, 419731), (64574, 328705), (65741, 322870), (70135, 302642), (131482, 161435), (140270, 151321)]