21511110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 53561088

約数和(自身を除く): 32049978

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 83, 106, 159, 163, 166, 249, 265, 318, 326, 415, 489, 498, 530, 795, 815, 830, 978, 1245, 1590, 1630, 2445, 2490, 4399, 4890, 8639, 8798, 13197, 13529, 17278, 21995, 25917, 26394, 27058, 40587, 43195, 43990, 51834, 65985, 67645, 81174, 86390, 129585, 131970, 135290, 202935, 259170, 405870, 717037, 1434074, 2151111, 3585185, 4302222, 7170370, 10755555, 21511110]

約数ペア:

[(1, 21511110), (2, 10755555), (3, 7170370), (5, 4302222), (6, 3585185), (10, 2151111), (15, 1434074), (30, 717037), (53, 405870), (83, 259170), (106, 202935), (159, 135290), (163, 131970), (166, 129585), (249, 86390), (265, 81174), (318, 67645), (326, 65985), (415, 51834), (489, 43990), (498, 43195), (530, 40587), (795, 27058), (815, 26394), (830, 25917), (978, 21995), (1245, 17278), (1590, 13529), (1630, 13197), (2445, 8798), (2490, 8639), (4399, 4890)]