91152020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 198450000

約数和(自身を除く): 107297980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 410, 445, 820, 890, 1249, 1780, 2498, 3649, 4996, 6245, 7298, 12490, 14596, 18245, 24980, 36490, 51209, 72980, 102418, 111161, 204836, 222322, 256045, 444644, 512090, 555805, 1024180, 1111610, 2223220, 4557601, 9115202, 18230404, 22788005, 45576010, 91152020]

約数ペア:

[(1, 91152020), (2, 45576010), (4, 22788005), (5, 18230404), (10, 9115202), (20, 4557601), (41, 2223220), (82, 1111610), (89, 1024180), (164, 555805), (178, 512090), (205, 444644), (356, 256045), (410, 222322), (445, 204836), (820, 111161), (890, 102418), (1249, 72980), (1780, 51209), (2498, 36490), (3649, 24980), (4996, 18245), (6245, 14596), (7298, 12490)]