128225920

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 331361280

約数和(自身を除く): 203135360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 230, 248, 281, 310, 320, 368, 460, 496, 562, 620, 640, 713, 736, 920, 992, 1124, 1240, 1405, 1426, 1472, 1840, 1984, 2248, 2480, 2810, 2852, 2944, 3565, 3680, 3968, 4496, 4960, 5620, 5704, 6463, 7130, 7360, 8711, 8992, 9920, 11240, 11408, 12926, 14260, 14720, 17422, 17984, 19840, 22480, 22816, 25852, 28520, 32315, 34844, 35968, 43555, 44960, 45632, 51704, 57040, 64630, 69688, 87110, 89920, 91264, 103408, 114080, 129260, 139376, 174220, 179840, 200353, 206816, 228160, 258520, 278752, 348440, 400706, 413632, 456320, 517040, 557504, 696880, 801412, 827264, 1001765, 1034080, 1115008, 1393760, 1602824, 2003530, 2068160, 2787520, 3205648, 4007060, 4136320, 5575040, 6411296, 8014120, 12822592, 16028240, 25645184, 32056480, 64112960, 128225920]

約数ペア:

[(1, 128225920), (2, 64112960), (4, 32056480), (5, 25645184), (8, 16028240), (10, 12822592), (16, 8014120), (20, 6411296), (23, 5575040), (31, 4136320), (32, 4007060), (40, 3205648), (46, 2787520), (62, 2068160), (64, 2003530), (80, 1602824), (92, 1393760), (115, 1115008), (124, 1034080), (128, 1001765), (155, 827264), (160, 801412), (184, 696880), (230, 557504), (248, 517040), (281, 456320), (310, 413632), (320, 400706), (368, 348440), (460, 278752), (496, 258520), (562, 228160), (620, 206816), (640, 200353), (713, 179840), (736, 174220), (920, 139376), (992, 129260), (1124, 114080), (1240, 103408), (1405, 91264), (1426, 89920), (1472, 87110), (1840, 69688), (1984, 64630), (2248, 57040), (2480, 51704), (2810, 45632), (2852, 44960), (2944, 43555), (3565, 35968), (3680, 34844), (3968, 32315), (4496, 28520), (4960, 25852), (5620, 22816), (5704, 22480), (6463, 19840), (7130, 17984), (7360, 17422), (8711, 14720), (8992, 14260), (9920, 12926), (11240, 11408)]