253820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{37}}^1$

素因数の和:67

約数の個数: 48

約数和(自身を含む): 638400

約数和(自身を除く): 384580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 343, 370, 490, 518, 686, 740, 980, 1036, 1295, 1372, 1715, 1813, 2590, 3430, 3626, 5180, 6860, 7252, 9065, 12691, 18130, 25382, 36260, 50764, 63455, 126910, 253820]

約数ペア:

[(1, 253820), (2, 126910), (4, 63455), (5, 50764), (7, 36260), (10, 25382), (14, 18130), (20, 12691), (28, 9065), (35, 7252), (37, 6860), (49, 5180), (70, 3626), (74, 3430), (98, 2590), (140, 1813), (148, 1715), (185, 1372), (196, 1295), (245, 1036), (259, 980), (343, 740), (370, 686), (490, 518)]