21760640

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^2\times {\mathrm{281}}^1$

素因数の和:322

約数の個数: 96

約数和(自身を含む): 57384180

約数和(自身を除く): 35623540

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 220, 242, 281, 320, 352, 440, 484, 562, 605, 640, 704, 880, 968, 1124, 1210, 1405, 1408, 1760, 1936, 2248, 2420, 2810, 3091, 3520, 3872, 4496, 4840, 5620, 6182, 7040, 7744, 8992, 9680, 11240, 12364, 15455, 15488, 17984, 19360, 22480, 24728, 30910, 34001, 35968, 38720, 44960, 49456, 61820, 68002, 77440, 89920, 98912, 123640, 136004, 170005, 179840, 197824, 247280, 272008, 340010, 395648, 494560, 544016, 680020, 989120, 1088032, 1360040, 1978240, 2176064, 2720080, 4352128, 5440160, 10880320, 21760640]

約数ペア:

[(1, 21760640), (2, 10880320), (4, 5440160), (5, 4352128), (8, 2720080), (10, 2176064), (11, 1978240), (16, 1360040), (20, 1088032), (22, 989120), (32, 680020), (40, 544016), (44, 494560), (55, 395648), (64, 340010), (80, 272008), (88, 247280), (110, 197824), (121, 179840), (128, 170005), (160, 136004), (176, 123640), (220, 98912), (242, 89920), (281, 77440), (320, 68002), (352, 61820), (440, 49456), (484, 44960), (562, 38720), (605, 35968), (640, 34001), (704, 30910), (880, 24728), (968, 22480), (1124, 19360), (1210, 17984), (1405, 15488), (1408, 15455), (1760, 12364), (1936, 11240), (2248, 9680), (2420, 8992), (2810, 7744), (3091, 7040), (3520, 6182), (3872, 5620), (4496, 4840)]