81768680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12697}}^1$

素因数の和:12738

約数の個数: 64

約数和(自身を含む): 219421440

約数和(自身を除く): 137652760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 12697, 25394, 50788, 63485, 88879, 101576, 126970, 177758, 253940, 292031, 355516, 444395, 507880, 584062, 711032, 888790, 1168124, 1460155, 1777580, 2044217, 2336248, 2920310, 3555160, 4088434, 5840620, 8176868, 10221085, 11681240, 16353736, 20442170, 40884340, 81768680]

約数ペア:

[(1, 81768680), (2, 40884340), (4, 20442170), (5, 16353736), (7, 11681240), (8, 10221085), (10, 8176868), (14, 5840620), (20, 4088434), (23, 3555160), (28, 2920310), (35, 2336248), (40, 2044217), (46, 1777580), (56, 1460155), (70, 1168124), (92, 888790), (115, 711032), (140, 584062), (161, 507880), (184, 444395), (230, 355516), (280, 292031), (322, 253940), (460, 177758), (644, 126970), (805, 101576), (920, 88879), (1288, 63485), (1610, 50788), (3220, 25394), (6440, 12697)]