21000887955

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1\times {\mathrm{25717}}^1$

素因数の和:26017

約数の個数: 64

約数和(自身を含む): 39107819520

約数和(自身を除く): 18106931565

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 263, 345, 621, 789, 1035, 1315, 2367, 3105, 3945, 6049, 7101, 11835, 18147, 25717, 30245, 35505, 54441, 77151, 90735, 128585, 163323, 231453, 272205, 385755, 591491, 694359, 816615, 1157265, 1774473, 2957455, 3471795, 5323419, 6763571, 8872365, 15970257, 20290713, 26617095, 33817855, 60872139, 79851285, 101453565, 155562133, 182616417, 304360695, 466686399, 777810665, 913082085, 1400059197, 2333431995, 4200177591, 7000295985, 21000887955]

約数ペア:

[(1, 21000887955), (3, 7000295985), (5, 4200177591), (9, 2333431995), (15, 1400059197), (23, 913082085), (27, 777810665), (45, 466686399), (69, 304360695), (115, 182616417), (135, 155562133), (207, 101453565), (263, 79851285), (345, 60872139), (621, 33817855), (789, 26617095), (1035, 20290713), (1315, 15970257), (2367, 8872365), (3105, 6763571), (3945, 5323419), (6049, 3471795), (7101, 2957455), (11835, 1774473), (18147, 1157265), (25717, 816615), (30245, 694359), (35505, 591491), (54441, 385755), (77151, 272205), (90735, 231453), (128585, 163323)]