20357760

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 128

約数和(自身を含む): 67858560

約数和(自身を除く): 47500800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 230, 240, 276, 320, 345, 368, 384, 460, 461, 480, 552, 640, 690, 736, 920, 922, 960, 1104, 1380, 1383, 1472, 1840, 1844, 1920, 2208, 2305, 2760, 2766, 2944, 3680, 3688, 4416, 4610, 5520, 5532, 6915, 7360, 7376, 8832, 9220, 10603, 11040, 11064, 13830, 14720, 14752, 18440, 21206, 22080, 22128, 27660, 29504, 31809, 36880, 42412, 44160, 44256, 53015, 55320, 59008, 63618, 73760, 84824, 88512, 106030, 110640, 127236, 147520, 159045, 169648, 177024, 212060, 221280, 254472, 295040, 318090, 339296, 424120, 442560, 508944, 636180, 678592, 848240, 885120, 1017888, 1272360, 1357184, 1696480, 2035776, 2544720, 3392960, 4071552, 5089440, 6785920, 10178880, 20357760]

約数ペア:

[(1, 20357760), (2, 10178880), (3, 6785920), (4, 5089440), (5, 4071552), (6, 3392960), (8, 2544720), (10, 2035776), (12, 1696480), (15, 1357184), (16, 1272360), (20, 1017888), (23, 885120), (24, 848240), (30, 678592), (32, 636180), (40, 508944), (46, 442560), (48, 424120), (60, 339296), (64, 318090), (69, 295040), (80, 254472), (92, 221280), (96, 212060), (115, 177024), (120, 169648), (128, 159045), (138, 147520), (160, 127236), (184, 110640), (192, 106030), (230, 88512), (240, 84824), (276, 73760), (320, 63618), (345, 59008), (368, 55320), (384, 53015), (460, 44256), (461, 44160), (480, 42412), (552, 36880), (640, 31809), (690, 29504), (736, 27660), (920, 22128), (922, 22080), (960, 21206), (1104, 18440), (1380, 14752), (1383, 14720), (1472, 13830), (1840, 11064), (1844, 11040), (1920, 10603), (2208, 9220), (2305, 8832), (2760, 7376), (2766, 7360), (2944, 6915), (3680, 5532), (3688, 5520), (4416, 4610)]