209511540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:926

約数の個数: 144

約数和(自身を含む): 730259712

約数和(自身を除く): 520748172

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 257, 315, 420, 514, 630, 647, 771, 1028, 1260, 1285, 1294, 1542, 1799, 1941, 2313, 2570, 2588, 3084, 3235, 3598, 3855, 3882, 4529, 4626, 5140, 5397, 5823, 6470, 7196, 7710, 7764, 8995, 9058, 9252, 9705, 10794, 11565, 11646, 12940, 13587, 15420, 16191, 17990, 18116, 19410, 21588, 22645, 23130, 23292, 26985, 27174, 29115, 32382, 35980, 38820, 40761, 45290, 46260, 53970, 54348, 58230, 64764, 67935, 80955, 81522, 90580, 107940, 116460, 135870, 161910, 163044, 166279, 203805, 271740, 323820, 332558, 407610, 498837, 665116, 815220, 831395, 997674, 1163953, 1496511, 1662790, 1995348, 2327906, 2494185, 2993022, 3325580, 3491859, 4655812, 4988370, 5819765, 5986044, 6983718, 7482555, 9976740, 10475577, 11639530, 13967436, 14965110, 17459295, 20951154, 23279060, 29930220, 34918590, 41902308, 52377885, 69837180, 104755770, 209511540]

約数ペア:

[(1, 209511540), (2, 104755770), (3, 69837180), (4, 52377885), (5, 41902308), (6, 34918590), (7, 29930220), (9, 23279060), (10, 20951154), (12, 17459295), (14, 14965110), (15, 13967436), (18, 11639530), (20, 10475577), (21, 9976740), (28, 7482555), (30, 6983718), (35, 5986044), (36, 5819765), (42, 4988370), (45, 4655812), (60, 3491859), (63, 3325580), (70, 2993022), (84, 2494185), (90, 2327906), (105, 1995348), (126, 1662790), (140, 1496511), (180, 1163953), (210, 997674), (252, 831395), (257, 815220), (315, 665116), (420, 498837), (514, 407610), (630, 332558), (647, 323820), (771, 271740), (1028, 203805), (1260, 166279), (1285, 163044), (1294, 161910), (1542, 135870), (1799, 116460), (1941, 107940), (2313, 90580), (2570, 81522), (2588, 80955), (3084, 67935), (3235, 64764), (3598, 58230), (3855, 54348), (3882, 53970), (4529, 46260), (4626, 45290), (5140, 40761), (5397, 38820), (5823, 35980), (6470, 32382), (7196, 29115), (7710, 27174), (7764, 26985), (8995, 23292), (9058, 23130), (9252, 22645), (9705, 21588), (10794, 19410), (11565, 18116), (11646, 17990), (12940, 16191), (13587, 15420)]