19721925

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 38223744

約数和(自身を除く): 18501819

約数列:

[1, 3, 5, 9, 15, 23, 25, 37, 45, 69, 75, 103, 111, 115, 185, 207, 225, 309, 333, 345, 515, 555, 575, 851, 925, 927, 1035, 1545, 1665, 1725, 2369, 2553, 2575, 2775, 3811, 4255, 4635, 5175, 7107, 7659, 7725, 8325, 11433, 11845, 12765, 19055, 21275, 21321, 23175, 34299, 35535, 38295, 57165, 59225, 63825, 87653, 95275, 106605, 171495, 177675, 191475, 262959, 285825, 438265, 533025, 788877, 857475, 1314795, 2191325, 3944385, 6573975, 19721925]

約数ペア:

[(1, 19721925), (3, 6573975), (5, 3944385), (9, 2191325), (15, 1314795), (23, 857475), (25, 788877), (37, 533025), (45, 438265), (69, 285825), (75, 262959), (103, 191475), (111, 177675), (115, 171495), (185, 106605), (207, 95275), (225, 87653), (309, 63825), (333, 59225), (345, 57165), (515, 38295), (555, 35535), (575, 34299), (851, 23175), (925, 21321), (927, 21275), (1035, 19055), (1545, 12765), (1665, 11845), (1725, 11433), (2369, 8325), (2553, 7725), (2575, 7659), (2775, 7107), (3811, 5175), (4255, 4635)]