647640

素因数分解:

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

素因数の和:281

約数の個数: 96

約数和(自身を含む): 2414880

約数和(自身を除く): 1767240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 257, 280, 315, 360, 420, 504, 514, 630, 771, 840, 1028, 1260, 1285, 1542, 1799, 2056, 2313, 2520, 2570, 3084, 3598, 3855, 4626, 5140, 5397, 6168, 7196, 7710, 8995, 9252, 10280, 10794, 11565, 14392, 15420, 16191, 17990, 18504, 21588, 23130, 26985, 30840, 32382, 35980, 43176, 46260, 53970, 64764, 71960, 80955, 92520, 107940, 129528, 161910, 215880, 323820, 647640]

約数ペア:

[(1, 647640), (2, 323820), (3, 215880), (4, 161910), (5, 129528), (6, 107940), (7, 92520), (8, 80955), (9, 71960), (10, 64764), (12, 53970), (14, 46260), (15, 43176), (18, 35980), (20, 32382), (21, 30840), (24, 26985), (28, 23130), (30, 21588), (35, 18504), (36, 17990), (40, 16191), (42, 15420), (45, 14392), (56, 11565), (60, 10794), (63, 10280), (70, 9252), (72, 8995), (84, 7710), (90, 7196), (105, 6168), (120, 5397), (126, 5140), (140, 4626), (168, 3855), (180, 3598), (210, 3084), (252, 2570), (257, 2520), (280, 2313), (315, 2056), (360, 1799), (420, 1542), (504, 1285), (514, 1260), (630, 1028), (771, 840)]