19668520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 26598680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 179, 205, 268, 328, 335, 358, 410, 536, 670, 716, 820, 895, 1340, 1432, 1640, 1790, 2680, 2747, 3580, 5494, 7160, 7339, 10988, 11993, 13735, 14678, 21976, 23986, 27470, 29356, 36695, 47972, 54940, 58712, 59965, 73390, 95944, 109880, 119930, 146780, 239860, 293560, 479720, 491713, 983426, 1966852, 2458565, 3933704, 4917130, 9834260, 19668520]

約数ペア:

[(1, 19668520), (2, 9834260), (4, 4917130), (5, 3933704), (8, 2458565), (10, 1966852), (20, 983426), (40, 491713), (41, 479720), (67, 293560), (82, 239860), (134, 146780), (164, 119930), (179, 109880), (205, 95944), (268, 73390), (328, 59965), (335, 58712), (358, 54940), (410, 47972), (536, 36695), (670, 29356), (716, 27470), (820, 23986), (895, 21976), (1340, 14678), (1432, 13735), (1640, 11993), (1790, 10988), (2680, 7339), (2747, 7160), (3580, 5494)]