21508956

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1280

約数の個数: 96

約数和(自身を含む): 66554880

約数和(自身を除く): 45045924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 42, 46, 54, 63, 69, 84, 92, 108, 126, 138, 161, 189, 207, 252, 276, 322, 378, 414, 483, 621, 644, 756, 828, 966, 1237, 1242, 1449, 1932, 2474, 2484, 2898, 3711, 4347, 4948, 5796, 7422, 8659, 8694, 11133, 14844, 17318, 17388, 22266, 25977, 28451, 33399, 34636, 44532, 51954, 56902, 66798, 77931, 85353, 103908, 113804, 133596, 155862, 170706, 199157, 233793, 256059, 311724, 341412, 398314, 467586, 512118, 597471, 768177, 796628, 935172, 1024236, 1194942, 1536354, 1792413, 2389884, 3072708, 3584826, 5377239, 7169652, 10754478, 21508956]

約数ペア:

[(1, 21508956), (2, 10754478), (3, 7169652), (4, 5377239), (6, 3584826), (7, 3072708), (9, 2389884), (12, 1792413), (14, 1536354), (18, 1194942), (21, 1024236), (23, 935172), (27, 796628), (28, 768177), (36, 597471), (42, 512118), (46, 467586), (54, 398314), (63, 341412), (69, 311724), (84, 256059), (92, 233793), (108, 199157), (126, 170706), (138, 155862), (161, 133596), (189, 113804), (207, 103908), (252, 85353), (276, 77931), (322, 66798), (378, 56902), (414, 51954), (483, 44532), (621, 34636), (644, 33399), (756, 28451), (828, 25977), (966, 22266), (1237, 17388), (1242, 17318), (1449, 14844), (1932, 11133), (2474, 8694), (2484, 8659), (2898, 7422), (3711, 5796), (4347, 4948)]