20577550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:290

約数の個数: 72

約数和(自身を含む): 45927864

約数和(自身を除く): 25350314

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 49, 50, 70, 74, 98, 175, 185, 227, 245, 259, 350, 370, 454, 490, 518, 925, 1135, 1225, 1295, 1589, 1813, 1850, 2270, 2450, 2590, 3178, 3626, 5675, 6475, 7945, 8399, 9065, 11123, 11350, 12950, 15890, 16798, 18130, 22246, 39725, 41995, 45325, 55615, 58793, 79450, 83990, 90650, 111230, 117586, 209975, 278075, 293965, 411551, 419950, 556150, 587930, 823102, 1469825, 2057755, 2939650, 4115510, 10288775, 20577550]

約数ペア:

[(1, 20577550), (2, 10288775), (5, 4115510), (7, 2939650), (10, 2057755), (14, 1469825), (25, 823102), (35, 587930), (37, 556150), (49, 419950), (50, 411551), (70, 293965), (74, 278075), (98, 209975), (175, 117586), (185, 111230), (227, 90650), (245, 83990), (259, 79450), (350, 58793), (370, 55615), (454, 45325), (490, 41995), (518, 39725), (925, 22246), (1135, 18130), (1225, 16798), (1295, 15890), (1589, 12950), (1813, 11350), (1850, 11123), (2270, 9065), (2450, 8399), (2590, 7945), (3178, 6475), (3626, 5675)]