19993240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 46992960

約数和(自身を除く): 26999720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 146, 164, 167, 205, 292, 328, 334, 365, 410, 584, 668, 730, 820, 835, 1336, 1460, 1640, 1670, 2920, 2993, 3340, 5986, 6680, 6847, 11972, 12191, 13694, 14965, 23944, 24382, 27388, 29930, 34235, 48764, 54776, 59860, 60955, 68470, 97528, 119720, 121910, 136940, 243820, 273880, 487640, 499831, 999662, 1999324, 2499155, 3998648, 4998310, 9996620, 19993240]

約数ペア:

[(1, 19993240), (2, 9996620), (4, 4998310), (5, 3998648), (8, 2499155), (10, 1999324), (20, 999662), (40, 499831), (41, 487640), (73, 273880), (82, 243820), (146, 136940), (164, 121910), (167, 119720), (205, 97528), (292, 68470), (328, 60955), (334, 59860), (365, 54776), (410, 48764), (584, 34235), (668, 29930), (730, 27388), (820, 24382), (835, 23944), (1336, 14965), (1460, 13694), (1640, 12191), (1670, 11972), (2920, 6847), (2993, 6680), (3340, 5986)]