20644400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 120

約数和(自身を含む): 58029024

約数和(自身を除く): 37384624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 73, 80, 100, 101, 112, 140, 146, 175, 200, 202, 280, 292, 350, 365, 400, 404, 505, 511, 560, 584, 700, 707, 730, 808, 1010, 1022, 1168, 1400, 1414, 1460, 1616, 1825, 2020, 2044, 2525, 2555, 2800, 2828, 2920, 3535, 3650, 4040, 4088, 5050, 5110, 5656, 5840, 7070, 7300, 7373, 8080, 8176, 10100, 10220, 11312, 12775, 14140, 14600, 14746, 17675, 20200, 20440, 25550, 28280, 29200, 29492, 35350, 36865, 40400, 40880, 51100, 51611, 56560, 58984, 70700, 73730, 102200, 103222, 117968, 141400, 147460, 184325, 204400, 206444, 258055, 282800, 294920, 368650, 412888, 516110, 589840, 737300, 825776, 1032220, 1290275, 1474600, 2064440, 2580550, 2949200, 4128880, 5161100, 10322200, 20644400]

約数ペア:

[(1, 20644400), (2, 10322200), (4, 5161100), (5, 4128880), (7, 2949200), (8, 2580550), (10, 2064440), (14, 1474600), (16, 1290275), (20, 1032220), (25, 825776), (28, 737300), (35, 589840), (40, 516110), (50, 412888), (56, 368650), (70, 294920), (73, 282800), (80, 258055), (100, 206444), (101, 204400), (112, 184325), (140, 147460), (146, 141400), (175, 117968), (200, 103222), (202, 102200), (280, 73730), (292, 70700), (350, 58984), (365, 56560), (400, 51611), (404, 51100), (505, 40880), (511, 40400), (560, 36865), (584, 35350), (700, 29492), (707, 29200), (730, 28280), (808, 25550), (1010, 20440), (1022, 20200), (1168, 17675), (1400, 14746), (1414, 14600), (1460, 14140), (1616, 12775), (1825, 11312), (2020, 10220), (2044, 10100), (2525, 8176), (2555, 8080), (2800, 7373), (2828, 7300), (2920, 7070), (3535, 5840), (3650, 5656), (4040, 5110), (4088, 5050)]