61521280

素因数分解:

$2^7\times 5^1\times {\mathrm{97}}^1\times {\mathrm{991}}^1$

素因数の和:1107

約数の個数: 64

約数和(自身を含む): 148740480

約数和(自身を除く): 87219200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 320, 388, 485, 640, 776, 970, 991, 1552, 1940, 1982, 3104, 3880, 3964, 4955, 6208, 7760, 7928, 9910, 12416, 15520, 15856, 19820, 31040, 31712, 39640, 62080, 63424, 79280, 96127, 126848, 158560, 192254, 317120, 384508, 480635, 634240, 769016, 961270, 1538032, 1922540, 3076064, 3845080, 6152128, 7690160, 12304256, 15380320, 30760640, 61521280]

約数ペア:

[(1, 61521280), (2, 30760640), (4, 15380320), (5, 12304256), (8, 7690160), (10, 6152128), (16, 3845080), (20, 3076064), (32, 1922540), (40, 1538032), (64, 961270), (80, 769016), (97, 634240), (128, 480635), (160, 384508), (194, 317120), (320, 192254), (388, 158560), (485, 126848), (640, 96127), (776, 79280), (970, 63424), (991, 62080), (1552, 39640), (1940, 31712), (1982, 31040), (3104, 19820), (3880, 15856), (3964, 15520), (4955, 12416), (6208, 9910), (7760, 7928)]