18999495

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 36633600

約数和(自身を除く): 17634105

約数列:

[1, 3, 5, 9, 15, 23, 27, 29, 45, 69, 87, 115, 135, 145, 207, 211, 261, 345, 435, 621, 633, 667, 783, 1035, 1055, 1305, 1899, 2001, 3105, 3165, 3335, 3915, 4853, 5697, 6003, 6119, 9495, 10005, 14559, 18009, 18357, 24265, 28485, 30015, 30595, 43677, 55071, 72795, 90045, 91785, 131031, 140737, 165213, 218385, 275355, 422211, 655155, 703685, 826065, 1266633, 2111055, 3799899, 6333165, 18999495]

約数ペア:

[(1, 18999495), (3, 6333165), (5, 3799899), (9, 2111055), (15, 1266633), (23, 826065), (27, 703685), (29, 655155), (45, 422211), (69, 275355), (87, 218385), (115, 165213), (135, 140737), (145, 131031), (207, 91785), (211, 90045), (261, 72795), (345, 55071), (435, 43677), (621, 30595), (633, 30015), (667, 28485), (783, 24265), (1035, 18357), (1055, 18009), (1305, 14559), (1899, 10005), (2001, 9495), (3105, 6119), (3165, 6003), (3335, 5697), (3915, 4853)]