100405900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:720

約数の個数: 108

約数和(自身を含む): 262024896

約数和(自身を除く): 161618996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 49, 50, 62, 70, 98, 100, 124, 140, 155, 175, 196, 217, 245, 310, 350, 434, 490, 620, 661, 700, 775, 868, 980, 1085, 1225, 1322, 1519, 1550, 2170, 2450, 2644, 3038, 3100, 3305, 4340, 4627, 4900, 5425, 6076, 6610, 7595, 9254, 10850, 13220, 15190, 16525, 18508, 20491, 21700, 23135, 30380, 32389, 33050, 37975, 40982, 46270, 64778, 66100, 75950, 81964, 92540, 102455, 115675, 129556, 143437, 151900, 161945, 204910, 231350, 286874, 323890, 409820, 462700, 512275, 573748, 647780, 717185, 809725, 1004059, 1024550, 1434370, 1619450, 2008118, 2049100, 2868740, 3238900, 3585925, 4016236, 5020295, 7171850, 10040590, 14343700, 20081180, 25101475, 50202950, 100405900]

約数ペア:

[(1, 100405900), (2, 50202950), (4, 25101475), (5, 20081180), (7, 14343700), (10, 10040590), (14, 7171850), (20, 5020295), (25, 4016236), (28, 3585925), (31, 3238900), (35, 2868740), (49, 2049100), (50, 2008118), (62, 1619450), (70, 1434370), (98, 1024550), (100, 1004059), (124, 809725), (140, 717185), (155, 647780), (175, 573748), (196, 512275), (217, 462700), (245, 409820), (310, 323890), (350, 286874), (434, 231350), (490, 204910), (620, 161945), (661, 151900), (700, 143437), (775, 129556), (868, 115675), (980, 102455), (1085, 92540), (1225, 81964), (1322, 75950), (1519, 66100), (1550, 64778), (2170, 46270), (2450, 40982), (2644, 37975), (3038, 33050), (3100, 32389), (3305, 30380), (4340, 23135), (4627, 21700), (4900, 20491), (5425, 18508), (6076, 16525), (6610, 15190), (7595, 13220), (9254, 10850)]