217401520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16879}}^1$

素因数の和:16922

約数の個数: 80

約数和(自身を含む): 602818560

約数和(自身を除く): 385417040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880, 16879, 33758, 67516, 84395, 118153, 135032, 168790, 236306, 270064, 337580, 388217, 472612, 590765, 675160, 776434, 945224, 1181530, 1350320, 1552868, 1890448, 1941085, 2363060, 2717519, 3105736, 3882170, 4726120, 5435038, 6211472, 7764340, 9452240, 10870076, 13587595, 15528680, 21740152, 27175190, 31057360, 43480304, 54350380, 108700760, 217401520]

約数ペア:

[(1, 217401520), (2, 108700760), (4, 54350380), (5, 43480304), (7, 31057360), (8, 27175190), (10, 21740152), (14, 15528680), (16, 13587595), (20, 10870076), (23, 9452240), (28, 7764340), (35, 6211472), (40, 5435038), (46, 4726120), (56, 3882170), (70, 3105736), (80, 2717519), (92, 2363060), (112, 1941085), (115, 1890448), (140, 1552868), (161, 1350320), (184, 1181530), (230, 945224), (280, 776434), (322, 675160), (368, 590765), (460, 472612), (560, 388217), (644, 337580), (805, 270064), (920, 236306), (1288, 168790), (1610, 135032), (1840, 118153), (2576, 84395), (3220, 67516), (6440, 33758), (12880, 16879)]