204540420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{739}}^1$

素因数の和:1417

約数の個数: 96

約数和(自身を含む): 656409600

約数和(自身を除く): 451869180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 659, 739, 1318, 1478, 1977, 2217, 2636, 2956, 3295, 3695, 3954, 4434, 4613, 5173, 6590, 7390, 7908, 8868, 9226, 9885, 10346, 11085, 13180, 13839, 14780, 15519, 18452, 19770, 20692, 22170, 23065, 25865, 27678, 31038, 39540, 44340, 46130, 51730, 55356, 62076, 69195, 77595, 92260, 103460, 138390, 155190, 276780, 310380, 487001, 974002, 1461003, 1948004, 2435005, 2922006, 3409007, 4870010, 5844012, 6818014, 7305015, 9740020, 10227021, 13636028, 14610030, 17045035, 20454042, 29220060, 34090070, 40908084, 51135105, 68180140, 102270210, 204540420]

約数ペア:

[(1, 204540420), (2, 102270210), (3, 68180140), (4, 51135105), (5, 40908084), (6, 34090070), (7, 29220060), (10, 20454042), (12, 17045035), (14, 14610030), (15, 13636028), (20, 10227021), (21, 9740020), (28, 7305015), (30, 6818014), (35, 5844012), (42, 4870010), (60, 3409007), (70, 2922006), (84, 2435005), (105, 1948004), (140, 1461003), (210, 974002), (420, 487001), (659, 310380), (739, 276780), (1318, 155190), (1478, 138390), (1977, 103460), (2217, 92260), (2636, 77595), (2956, 69195), (3295, 62076), (3695, 55356), (3954, 51730), (4434, 46130), (4613, 44340), (5173, 39540), (6590, 31038), (7390, 27678), (7908, 25865), (8868, 23065), (9226, 22170), (9885, 20692), (10346, 19770), (11085, 18452), (13180, 15519), (13839, 14780)]