81937905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 157593600

約数和(自身を除く): 75655695

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 71, 87, 105, 145, 203, 213, 355, 379, 435, 497, 609, 1015, 1065, 1137, 1491, 1895, 2059, 2485, 2653, 3045, 5685, 6177, 7455, 7959, 10295, 10991, 13265, 14413, 26909, 30885, 32973, 39795, 43239, 54955, 72065, 76937, 80727, 134545, 164865, 188363, 216195, 230811, 384685, 403635, 565089, 780361, 941815, 1154055, 2341083, 2825445, 3901805, 5462527, 11705415, 16387581, 27312635, 81937905]

約数ペア:

[(1, 81937905), (3, 27312635), (5, 16387581), (7, 11705415), (15, 5462527), (21, 3901805), (29, 2825445), (35, 2341083), (71, 1154055), (87, 941815), (105, 780361), (145, 565089), (203, 403635), (213, 384685), (355, 230811), (379, 216195), (435, 188363), (497, 164865), (609, 134545), (1015, 80727), (1065, 76937), (1137, 72065), (1491, 54955), (1895, 43239), (2059, 39795), (2485, 32973), (2653, 30885), (3045, 26909), (5685, 14413), (6177, 13265), (7455, 10991), (7959, 10295)]