61439140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:977

約数の個数: 72

約数和(自身を含む): 152373312

約数和(自身を除く): 90934172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 883, 980, 994, 1420, 1766, 1988, 2485, 3479, 3532, 4415, 4970, 6181, 6958, 8830, 9940, 12362, 13916, 17395, 17660, 24724, 30905, 34790, 43267, 61810, 62693, 69580, 86534, 123620, 125386, 173068, 216335, 250772, 313465, 432670, 438851, 626930, 865340, 877702, 1253860, 1755404, 2194255, 3071957, 4388510, 6143914, 8777020, 12287828, 15359785, 30719570, 61439140]

約数ペア:

[(1, 61439140), (2, 30719570), (4, 15359785), (5, 12287828), (7, 8777020), (10, 6143914), (14, 4388510), (20, 3071957), (28, 2194255), (35, 1755404), (49, 1253860), (70, 877702), (71, 865340), (98, 626930), (140, 438851), (142, 432670), (196, 313465), (245, 250772), (284, 216335), (355, 173068), (490, 125386), (497, 123620), (710, 86534), (883, 69580), (980, 62693), (994, 61810), (1420, 43267), (1766, 34790), (1988, 30905), (2485, 24724), (3479, 17660), (3532, 17395), (4415, 13916), (4970, 12362), (6181, 9940), (6958, 8830)]