18747148

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 21169652

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 131, 133, 262, 266, 269, 524, 532, 538, 917, 1076, 1834, 1883, 2489, 3668, 3766, 4978, 5111, 7532, 9956, 10222, 17423, 20444, 34846, 35239, 35777, 69692, 70478, 71554, 140956, 143108, 246673, 493346, 669541, 986692, 1339082, 2678164, 4686787, 9373574, 18747148]

約数ペア:

[(1, 18747148), (2, 9373574), (4, 4686787), (7, 2678164), (14, 1339082), (19, 986692), (28, 669541), (38, 493346), (76, 246673), (131, 143108), (133, 140956), (262, 71554), (266, 70478), (269, 69692), (524, 35777), (532, 35239), (538, 34846), (917, 20444), (1076, 17423), (1834, 10222), (1883, 9956), (2489, 7532), (3668, 5111), (3766, 4978)]