2638340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 5987520

約数和(自身を除く): 3349180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 131, 190, 212, 262, 265, 380, 524, 530, 655, 1007, 1060, 1310, 2014, 2489, 2620, 4028, 4978, 5035, 6943, 9956, 10070, 12445, 13886, 20140, 24890, 27772, 34715, 49780, 69430, 131917, 138860, 263834, 527668, 659585, 1319170, 2638340]

約数ペア:

[(1, 2638340), (2, 1319170), (4, 659585), (5, 527668), (10, 263834), (19, 138860), (20, 131917), (38, 69430), (53, 49780), (76, 34715), (95, 27772), (106, 24890), (131, 20140), (190, 13886), (212, 12445), (262, 10070), (265, 9956), (380, 6943), (524, 5035), (530, 4978), (655, 4028), (1007, 2620), (1060, 2489), (1310, 2014)]