18658900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 45108224

約数和(自身を除く): 26449324

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 463, 620, 650, 775, 806, 926, 1300, 1550, 1612, 1852, 2015, 2315, 3100, 4030, 4630, 6019, 8060, 9260, 10075, 11575, 12038, 14353, 20150, 23150, 24076, 28706, 30095, 40300, 46300, 57412, 60190, 71765, 120380, 143530, 150475, 186589, 287060, 300950, 358825, 373178, 601900, 717650, 746356, 932945, 1435300, 1865890, 3731780, 4664725, 9329450, 18658900]

約数ペア:

[(1, 18658900), (2, 9329450), (4, 4664725), (5, 3731780), (10, 1865890), (13, 1435300), (20, 932945), (25, 746356), (26, 717650), (31, 601900), (50, 373178), (52, 358825), (62, 300950), (65, 287060), (100, 186589), (124, 150475), (130, 143530), (155, 120380), (260, 71765), (310, 60190), (325, 57412), (403, 46300), (463, 40300), (620, 30095), (650, 28706), (775, 24076), (806, 23150), (926, 20150), (1300, 14353), (1550, 12038), (1612, 11575), (1852, 10075), (2015, 9260), (2315, 8060), (3100, 6019), (4030, 4630)]