281291640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1303}}^1$

素因数の和:1581

約数の個数: 128

約数和(自身を含む): 968924160

約数和(自身を除く): 687632520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 257, 280, 420, 514, 771, 840, 1028, 1285, 1303, 1542, 1799, 2056, 2570, 2606, 3084, 3598, 3855, 3909, 5140, 5212, 5397, 6168, 6515, 7196, 7710, 7818, 8995, 9121, 10280, 10424, 10794, 13030, 14392, 15420, 15636, 17990, 18242, 19545, 21588, 26060, 26985, 27363, 30840, 31272, 35980, 36484, 39090, 43176, 45605, 52120, 53970, 54726, 71960, 72968, 78180, 91210, 107940, 109452, 136815, 156360, 182420, 215880, 218904, 273630, 334871, 364840, 547260, 669742, 1004613, 1094520, 1339484, 1674355, 2009226, 2344097, 2678968, 3348710, 4018452, 4688194, 5023065, 6697420, 7032291, 8036904, 9376388, 10046130, 11720485, 13394840, 14064582, 18752776, 20092260, 23440970, 28129164, 35161455, 40184520, 46881940, 56258328, 70322910, 93763880, 140645820, 281291640]

約数ペア:

[(1, 281291640), (2, 140645820), (3, 93763880), (4, 70322910), (5, 56258328), (6, 46881940), (7, 40184520), (8, 35161455), (10, 28129164), (12, 23440970), (14, 20092260), (15, 18752776), (20, 14064582), (21, 13394840), (24, 11720485), (28, 10046130), (30, 9376388), (35, 8036904), (40, 7032291), (42, 6697420), (56, 5023065), (60, 4688194), (70, 4018452), (84, 3348710), (105, 2678968), (120, 2344097), (140, 2009226), (168, 1674355), (210, 1339484), (257, 1094520), (280, 1004613), (420, 669742), (514, 547260), (771, 364840), (840, 334871), (1028, 273630), (1285, 218904), (1303, 215880), (1542, 182420), (1799, 156360), (2056, 136815), (2570, 109452), (2606, 107940), (3084, 91210), (3598, 78180), (3855, 72968), (3909, 71960), (5140, 54726), (5212, 53970), (5397, 52120), (6168, 45605), (6515, 43176), (7196, 39090), (7710, 36484), (7818, 35980), (8995, 31272), (9121, 30840), (10280, 27363), (10424, 26985), (10794, 26060), (13030, 21588), (14392, 19545), (15420, 18242), (15636, 17990)]