207800019

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 364032000

約数和(自身を除く): 156231981

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 141, 149, 157, 189, 329, 423, 447, 471, 987, 1043, 1099, 1269, 1341, 1413, 2961, 3129, 3297, 4023, 4239, 7003, 7379, 8883, 9387, 9891, 21009, 22137, 23393, 28161, 29673, 49021, 51653, 63027, 66411, 70179, 147063, 154959, 163751, 189081, 199233, 210537, 441189, 464877, 491253, 631611, 1099471, 1323567, 1394631, 1473759, 3298413, 4421277, 7696297, 9895239, 23088891, 29685717, 69266673, 207800019]

約数ペア:

[(1, 207800019), (3, 69266673), (7, 29685717), (9, 23088891), (21, 9895239), (27, 7696297), (47, 4421277), (63, 3298413), (141, 1473759), (149, 1394631), (157, 1323567), (189, 1099471), (329, 631611), (423, 491253), (447, 464877), (471, 441189), (987, 210537), (1043, 199233), (1099, 189081), (1269, 163751), (1341, 154959), (1413, 147063), (2961, 70179), (3129, 66411), (3297, 63027), (4023, 51653), (4239, 49021), (7003, 29673), (7379, 28161), (8883, 23393), (9387, 22137), (9891, 21009)]