21957880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{659}}^1$

素因数の和:701

約数の個数: 96

約数和(自身を含む): 60944400

約数和(自身を除く): 38986520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 85, 98, 119, 136, 140, 170, 196, 238, 245, 280, 340, 392, 476, 490, 595, 659, 680, 833, 952, 980, 1190, 1318, 1666, 1960, 2380, 2636, 3295, 3332, 4165, 4613, 4760, 5272, 6590, 6664, 8330, 9226, 11203, 13180, 16660, 18452, 22406, 23065, 26360, 32291, 33320, 36904, 44812, 46130, 56015, 64582, 78421, 89624, 92260, 112030, 129164, 156842, 161455, 184520, 224060, 258328, 313684, 322910, 392105, 448120, 548947, 627368, 645820, 784210, 1097894, 1291640, 1568420, 2195788, 2744735, 3136840, 4391576, 5489470, 10978940, 21957880]

約数ペア:

[(1, 21957880), (2, 10978940), (4, 5489470), (5, 4391576), (7, 3136840), (8, 2744735), (10, 2195788), (14, 1568420), (17, 1291640), (20, 1097894), (28, 784210), (34, 645820), (35, 627368), (40, 548947), (49, 448120), (56, 392105), (68, 322910), (70, 313684), (85, 258328), (98, 224060), (119, 184520), (136, 161455), (140, 156842), (170, 129164), (196, 112030), (238, 92260), (245, 89624), (280, 78421), (340, 64582), (392, 56015), (476, 46130), (490, 44812), (595, 36904), (659, 33320), (680, 32291), (833, 26360), (952, 23065), (980, 22406), (1190, 18452), (1318, 16660), (1666, 13180), (1960, 11203), (2380, 9226), (2636, 8330), (3295, 6664), (3332, 6590), (4165, 5272), (4613, 4760)]