21797880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:273

約数の個数: 128

約数和(自身を含む): 71668800

約数和(自身を除く): 49870920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 89, 104, 120, 130, 156, 157, 178, 195, 260, 267, 312, 314, 356, 390, 445, 471, 520, 534, 628, 712, 780, 785, 890, 942, 1068, 1157, 1256, 1335, 1560, 1570, 1780, 1884, 2041, 2136, 2314, 2355, 2670, 3140, 3471, 3560, 3768, 4082, 4628, 4710, 5340, 5785, 6123, 6280, 6942, 8164, 9256, 9420, 10205, 10680, 11570, 12246, 13884, 13973, 16328, 17355, 18840, 20410, 23140, 24492, 27768, 27946, 30615, 34710, 40820, 41919, 46280, 48984, 55892, 61230, 69420, 69865, 81640, 83838, 111784, 122460, 138840, 139730, 167676, 181649, 209595, 244920, 279460, 335352, 363298, 419190, 544947, 558920, 726596, 838380, 908245, 1089894, 1453192, 1676760, 1816490, 2179788, 2724735, 3632980, 4359576, 5449470, 7265960, 10898940, 21797880]

約数ペア:

[(1, 21797880), (2, 10898940), (3, 7265960), (4, 5449470), (5, 4359576), (6, 3632980), (8, 2724735), (10, 2179788), (12, 1816490), (13, 1676760), (15, 1453192), (20, 1089894), (24, 908245), (26, 838380), (30, 726596), (39, 558920), (40, 544947), (52, 419190), (60, 363298), (65, 335352), (78, 279460), (89, 244920), (104, 209595), (120, 181649), (130, 167676), (156, 139730), (157, 138840), (178, 122460), (195, 111784), (260, 83838), (267, 81640), (312, 69865), (314, 69420), (356, 61230), (390, 55892), (445, 48984), (471, 46280), (520, 41919), (534, 40820), (628, 34710), (712, 30615), (780, 27946), (785, 27768), (890, 24492), (942, 23140), (1068, 20410), (1157, 18840), (1256, 17355), (1335, 16328), (1560, 13973), (1570, 13884), (1780, 12246), (1884, 11570), (2041, 10680), (2136, 10205), (2314, 9420), (2355, 9256), (2670, 8164), (3140, 6942), (3471, 6280), (3560, 6123), (3768, 5785), (4082, 5340), (4628, 4710)]