78891560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 128

約数和(自身を含む): 209952000

約数和(自身を除く): 131060440

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 53, 55, 68, 85, 88, 106, 110, 136, 170, 187, 199, 212, 220, 265, 340, 374, 398, 424, 440, 530, 583, 680, 748, 796, 901, 935, 995, 1060, 1166, 1496, 1592, 1802, 1870, 1990, 2120, 2189, 2332, 2915, 3383, 3604, 3740, 3980, 4378, 4505, 4664, 5830, 6766, 7208, 7480, 7960, 8756, 9010, 9911, 10547, 10945, 11660, 13532, 16915, 17512, 18020, 19822, 21094, 21890, 23320, 27064, 33830, 36040, 37213, 39644, 42188, 43780, 49555, 52735, 67660, 74426, 79288, 84376, 87560, 99110, 105470, 116017, 135320, 148852, 179299, 186065, 198220, 210940, 232034, 297704, 358598, 372130, 396440, 421880, 464068, 580085, 717196, 744260, 896495, 928136, 1160170, 1434392, 1488520, 1792990, 1972289, 2320340, 3585980, 3944578, 4640680, 7171960, 7889156, 9861445, 15778312, 19722890, 39445780, 78891560]

約数ペア:

[(1, 78891560), (2, 39445780), (4, 19722890), (5, 15778312), (8, 9861445), (10, 7889156), (11, 7171960), (17, 4640680), (20, 3944578), (22, 3585980), (34, 2320340), (40, 1972289), (44, 1792990), (53, 1488520), (55, 1434392), (68, 1160170), (85, 928136), (88, 896495), (106, 744260), (110, 717196), (136, 580085), (170, 464068), (187, 421880), (199, 396440), (212, 372130), (220, 358598), (265, 297704), (340, 232034), (374, 210940), (398, 198220), (424, 186065), (440, 179299), (530, 148852), (583, 135320), (680, 116017), (748, 105470), (796, 99110), (901, 87560), (935, 84376), (995, 79288), (1060, 74426), (1166, 67660), (1496, 52735), (1592, 49555), (1802, 43780), (1870, 42188), (1990, 39644), (2120, 37213), (2189, 36040), (2332, 33830), (2915, 27064), (3383, 23320), (3604, 21890), (3740, 21094), (3980, 19822), (4378, 18020), (4505, 17512), (4664, 16915), (5830, 13532), (6766, 11660), (7208, 10945), (7480, 10547), (7960, 9911), (8756, 9010)]