20165040

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4001}}^1$

素因数の和:4027

約数の個数: 120

約数和(自身を含む): 77414688

約数和(自身を除く): 57249648

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4001, 5040, 8002, 12003, 16004, 20005, 24006, 28007, 32008, 36009, 40010, 48012, 56014, 60015, 64016, 72018, 80020, 84021, 96024, 112028, 120030, 140035, 144036, 160040, 168042, 180045, 192048, 224056, 240060, 252063, 280070, 288072, 320080, 336084, 360090, 420105, 448112, 480120, 504126, 560140, 576144, 672168, 720180, 840210, 960240, 1008252, 1120280, 1260315, 1344336, 1440360, 1680420, 2016504, 2240560, 2520630, 2880720, 3360840, 4033008, 5041260, 6721680, 10082520, 20165040]

約数ペア:

[(1, 20165040), (2, 10082520), (3, 6721680), (4, 5041260), (5, 4033008), (6, 3360840), (7, 2880720), (8, 2520630), (9, 2240560), (10, 2016504), (12, 1680420), (14, 1440360), (15, 1344336), (16, 1260315), (18, 1120280), (20, 1008252), (21, 960240), (24, 840210), (28, 720180), (30, 672168), (35, 576144), (36, 560140), (40, 504126), (42, 480120), (45, 448112), (48, 420105), (56, 360090), (60, 336084), (63, 320080), (70, 288072), (72, 280070), (80, 252063), (84, 240060), (90, 224056), (105, 192048), (112, 180045), (120, 168042), (126, 160040), (140, 144036), (144, 140035), (168, 120030), (180, 112028), (210, 96024), (240, 84021), (252, 80020), (280, 72018), (315, 64016), (336, 60015), (360, 56014), (420, 48012), (504, 40010), (560, 36009), (630, 32008), (720, 28007), (840, 24006), (1008, 20005), (1260, 16004), (1680, 12003), (2520, 8002), (4001, 5040)]