20400816

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1087}}^1$

素因数の和:1138

約数の個数: 80

約数和(自身を含む): 58281984

約数和(自身を除く): 37881168

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 23, 24, 34, 46, 48, 51, 68, 69, 92, 102, 136, 138, 184, 204, 272, 276, 368, 391, 408, 552, 782, 816, 1087, 1104, 1173, 1564, 2174, 2346, 3128, 3261, 4348, 4692, 6256, 6522, 8696, 9384, 13044, 17392, 18479, 18768, 25001, 26088, 36958, 50002, 52176, 55437, 73916, 75003, 100004, 110874, 147832, 150006, 200008, 221748, 295664, 300012, 400016, 425017, 443496, 600024, 850034, 886992, 1200048, 1275051, 1700068, 2550102, 3400136, 5100204, 6800272, 10200408, 20400816]

約数ペア:

[(1, 20400816), (2, 10200408), (3, 6800272), (4, 5100204), (6, 3400136), (8, 2550102), (12, 1700068), (16, 1275051), (17, 1200048), (23, 886992), (24, 850034), (34, 600024), (46, 443496), (48, 425017), (51, 400016), (68, 300012), (69, 295664), (92, 221748), (102, 200008), (136, 150006), (138, 147832), (184, 110874), (204, 100004), (272, 75003), (276, 73916), (368, 55437), (391, 52176), (408, 50002), (552, 36958), (782, 26088), (816, 25001), (1087, 18768), (1104, 18479), (1173, 17392), (1564, 13044), (2174, 9384), (2346, 8696), (3128, 6522), (3261, 6256), (4348, 4692)]