281543920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{21859}}^1$

素因数の和:21902

約数の個数: 80

約数和(自身を含む): 780664320

約数和(自身を除く): 499120400

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, 21859, 43718, 87436, 109295, 153013, 174872, 218590, 306026, 349744, 437180, 502757, 612052, 765065, 874360, 1005514, 1224104, 1530130, 1748720, 2011028, 2448208, 2513785, 3060260, 3519299, 4022056, 5027570, 6120520, 7038598, 8044112, 10055140, 12241040, 14077196, 17596495, 20110280, 28154392, 35192990, 40220560, 56308784, 70385980, 140771960, 281543920]

約数ペア:

[(1, 281543920), (2, 140771960), (4, 70385980), (5, 56308784), (7, 40220560), (8, 35192990), (10, 28154392), (14, 20110280), (16, 17596495), (20, 14077196), (23, 12241040), (28, 10055140), (35, 8044112), (40, 7038598), (46, 6120520), (56, 5027570), (70, 4022056), (80, 3519299), (92, 3060260), (112, 2513785), (115, 2448208), (140, 2011028), (161, 1748720), (184, 1530130), (230, 1224104), (280, 1005514), (322, 874360), (368, 765065), (460, 612052), (560, 502757), (644, 437180), (805, 349744), (920, 306026), (1288, 218590), (1610, 174872), (1840, 153013), (2576, 109295), (3220, 87436), (6440, 43718), (12880, 21859)]