19847745

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{227}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 36279360

約数和(自身を除く): 16431615

約数列:

[1, 3, 5, 9, 15, 29, 45, 67, 87, 145, 201, 227, 261, 335, 435, 603, 681, 1005, 1135, 1305, 1943, 2043, 3015, 3405, 5829, 6583, 9715, 10215, 15209, 17487, 19749, 29145, 32915, 45627, 59247, 76045, 87435, 98745, 136881, 228135, 296235, 441061, 684405, 1323183, 2205305, 3969549, 6615915, 19847745]

約数ペア:

[(1, 19847745), (3, 6615915), (5, 3969549), (9, 2205305), (15, 1323183), (29, 684405), (45, 441061), (67, 296235), (87, 228135), (145, 136881), (201, 98745), (227, 87435), (261, 76045), (335, 59247), (435, 45627), (603, 32915), (681, 29145), (1005, 19749), (1135, 17487), (1305, 15209), (1943, 10215), (2043, 9715), (3015, 6583), (3405, 5829)]