278920640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^2\times {\mathrm{907}}^1$

素因数の和:986

約数の個数: 84

約数和(自身を含む): 687052728

約数和(自身を除く): 408132088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 907, 961, 992, 1240, 1814, 1922, 1984, 2480, 3628, 3844, 4535, 4805, 4960, 7256, 7688, 9070, 9610, 9920, 14512, 15376, 18140, 19220, 28117, 29024, 30752, 36280, 38440, 56234, 58048, 61504, 72560, 76880, 112468, 140585, 145120, 153760, 224936, 281170, 290240, 307520, 449872, 562340, 871627, 899744, 1124680, 1743254, 1799488, 2249360, 3486508, 4358135, 4498720, 6973016, 8716270, 8997440, 13946032, 17432540, 27892064, 34865080, 55784128, 69730160, 139460320, 278920640]

約数ペア:

[(1, 278920640), (2, 139460320), (4, 69730160), (5, 55784128), (8, 34865080), (10, 27892064), (16, 17432540), (20, 13946032), (31, 8997440), (32, 8716270), (40, 6973016), (62, 4498720), (64, 4358135), (80, 3486508), (124, 2249360), (155, 1799488), (160, 1743254), (248, 1124680), (310, 899744), (320, 871627), (496, 562340), (620, 449872), (907, 307520), (961, 290240), (992, 281170), (1240, 224936), (1814, 153760), (1922, 145120), (1984, 140585), (2480, 112468), (3628, 76880), (3844, 72560), (4535, 61504), (4805, 58048), (4960, 56234), (7256, 38440), (7688, 36280), (9070, 30752), (9610, 29024), (9920, 28117), (14512, 19220), (15376, 18140)]