19659640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:533

約数の個数: 128

約数和(自身を含む): 59512320

約数和(自身を除く): 39852680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 491, 520, 572, 616, 715, 728, 770, 910, 982, 1001, 1144, 1430, 1540, 1820, 1964, 2002, 2455, 2860, 3080, 3437, 3640, 3928, 4004, 4910, 5005, 5401, 5720, 6383, 6874, 8008, 9820, 10010, 10802, 12766, 13748, 17185, 19640, 20020, 21604, 25532, 27005, 27496, 31915, 34370, 37807, 40040, 43208, 44681, 51064, 54010, 63830, 68740, 70213, 75614, 89362, 108020, 127660, 137480, 140426, 151228, 178724, 189035, 216040, 223405, 255320, 280852, 302456, 351065, 357448, 378070, 446810, 491491, 561704, 702130, 756140, 893620, 982982, 1404260, 1512280, 1787240, 1965964, 2457455, 2808520, 3931928, 4914910, 9829820, 19659640]

約数ペア:

[(1, 19659640), (2, 9829820), (4, 4914910), (5, 3931928), (7, 2808520), (8, 2457455), (10, 1965964), (11, 1787240), (13, 1512280), (14, 1404260), (20, 982982), (22, 893620), (26, 756140), (28, 702130), (35, 561704), (40, 491491), (44, 446810), (52, 378070), (55, 357448), (56, 351065), (65, 302456), (70, 280852), (77, 255320), (88, 223405), (91, 216040), (104, 189035), (110, 178724), (130, 151228), (140, 140426), (143, 137480), (154, 127660), (182, 108020), (220, 89362), (260, 75614), (280, 70213), (286, 68740), (308, 63830), (364, 54010), (385, 51064), (440, 44681), (455, 43208), (491, 40040), (520, 37807), (572, 34370), (616, 31915), (715, 27496), (728, 27005), (770, 25532), (910, 21604), (982, 20020), (1001, 19640), (1144, 17185), (1430, 13748), (1540, 12766), (1820, 10802), (1964, 10010), (2002, 9820), (2455, 8008), (2860, 6874), (3080, 6383), (3437, 5720), (3640, 5401), (3928, 5005), (4004, 4910)]