18339940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 43323840

約数和(自身を除く): 24983900

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 167, 170, 190, 289, 323, 334, 340, 380, 578, 646, 668, 835, 1156, 1292, 1445, 1615, 1670, 2839, 2890, 3173, 3230, 3340, 5491, 5678, 5780, 6346, 6460, 10982, 11356, 12692, 14195, 15865, 21964, 27455, 28390, 31730, 48263, 53941, 54910, 56780, 63460, 96526, 107882, 109820, 193052, 215764, 241315, 269705, 482630, 539410, 916997, 965260, 1078820, 1833994, 3667988, 4584985, 9169970, 18339940]

約数ペア:

[(1, 18339940), (2, 9169970), (4, 4584985), (5, 3667988), (10, 1833994), (17, 1078820), (19, 965260), (20, 916997), (34, 539410), (38, 482630), (68, 269705), (76, 241315), (85, 215764), (95, 193052), (167, 109820), (170, 107882), (190, 96526), (289, 63460), (323, 56780), (334, 54910), (340, 53941), (380, 48263), (578, 31730), (646, 28390), (668, 27455), (835, 21964), (1156, 15865), (1292, 14195), (1445, 12692), (1615, 11356), (1670, 10982), (2839, 6460), (2890, 6346), (3173, 5780), (3230, 5678), (3340, 5491)]